Chemical Datasheet
1,1-DIMETHYLHYDRAZINE |
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Chemical Identifiers
)
UN/NA Number - The United Nations-North America number (also called UN number or DOT number). 4-digit number identifying an individual chemical or group of chemicals with similar characteristics. Required on shipping papers; often shown on placards or labels. This numbering system was developed by the U.S. Department of Transportation, and then became the UN standard system for classifying hazardous materials.
CAS Number - Chemical Abstracts Service registry number. Unique identification number assigned to this chemical by the American Chemical Society.
CHRIS Code - 3-letter code used by the U.S. Coast Guard to identify individual chemicals included in its CHRIS (Chemical Hazards Response Information System) manual.
DOT Hazard Label - U.S. Department of Transportation hazard warning label for the chemical (such as flammable liquid or corrosive). This label must be displayed on shipped packages, railroad tank cars, and tank trucks according to specifications described in 49 CFR 172.
NFPA 704 - Text description of the diamond-shaped placard, which contains codes indicating the level of the chemical's health, flammability, and reactivity hazards, along with special hazards such as water- and air-reactivity. (The NFPA 704 diamond is also shown at the top of the datasheet.) See a guide to the NFPA diamond.
General Description - Brief description of the chemical's general appearance, behavior, and hazardousness.
List of data sources.
CAS Number - Chemical Abstracts Service registry number. Unique identification number assigned to this chemical by the American Chemical Society.
CHRIS Code - 3-letter code used by the U.S. Coast Guard to identify individual chemicals included in its CHRIS (Chemical Hazards Response Information System) manual.
DOT Hazard Label - U.S. Department of Transportation hazard warning label for the chemical (such as flammable liquid or corrosive). This label must be displayed on shipped packages, railroad tank cars, and tank trucks according to specifications described in 49 CFR 172.
NFPA 704 - Text description of the diamond-shaped placard, which contains codes indicating the level of the chemical's health, flammability, and reactivity hazards, along with special hazards such as water- and air-reactivity. (The NFPA 704 diamond is also shown at the top of the datasheet.) See a guide to the NFPA diamond.
General Description - Brief description of the chemical's general appearance, behavior, and hazardousness.
List of data sources.
| UN/NA Number | CAS Number | CHRIS Code | DOT Hazard Label |
|---|---|---|---|
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| NFPA 704: |
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General Description
A clear colorless liquid with an ammonia-like odor. Flash point 0°F. Corrosive to the skin. Less dense than water and soluble in water. Vapors are heavier than air and very toxic by inhalation, attacking the eyes and respiratory system. Prolonged exposure of containers to heat may result in their violent rupturing and rocketing due to decomposition. Generates toxic oxides of nitrogen when burned. Vapors may travel to a source of ignition and a flame can flashback to the source of vapors. Used as a rocket propellant and to make other chemicals.
Hazards
)
Reactivity Alerts - Special alerts if the chemical is especially reactive
(see list of reactivity alerts).
Air & Water Reactions - Special alerts if the chemical reacts with air, water, or moisture.
Fire Hazard - Description of the chemical's fire hazards (such as flammability, explosion risk, or byproducts that may evolve if the chemical is burned).
Health Hazard - Description of the chemical's health hazards (such as toxicity, flammability, or corrosivity).
Reactivity Profile - Description of the chemical's potential reactivity with other chemicals, air, and water. Also includes any other intrinsic reactive hazards (such as polymerizable or peroxidizable).
Reactive Groups - List of reactive groups that the chemical is assigned to, based on its known chemistry. Reactive groups are categories of chemicals that react in similar ways because their chemical structures are similar. Reactive groups are used to predict reactivity when you add a chemical to MyChemicals. Read more about reactive groups.
List of data sources.
Air & Water Reactions - Special alerts if the chemical reacts with air, water, or moisture.
Fire Hazard - Description of the chemical's fire hazards (such as flammability, explosion risk, or byproducts that may evolve if the chemical is burned).
Health Hazard - Description of the chemical's health hazards (such as toxicity, flammability, or corrosivity).
Reactivity Profile - Description of the chemical's potential reactivity with other chemicals, air, and water. Also includes any other intrinsic reactive hazards (such as polymerizable or peroxidizable).
Reactive Groups - List of reactive groups that the chemical is assigned to, based on its known chemistry. Reactive groups are categories of chemicals that react in similar ways because their chemical structures are similar. Reactive groups are used to predict reactivity when you add a chemical to MyChemicals. Read more about reactive groups.
List of data sources.
Reactivity Alerts
- Highly Flammable
- Strong Reducing Agent
- Air-Reactive
Air & Water Reactions
Highly flammable over a wide range of vapor concentrations. May ignite spontaneously when spread on a large surface exposed to the air. [Def. Res. and Eng., pp 299-300(1963)]. Dissolves and slowly decomposes in water.
Fire Hazard
Vapor may explode if ignited in an enclosed area. Vapors may travel to a source of ignition and flashback. Runoff to sewer may create fire or explosion hazard. When it decomposes, 1,1-dimethylhydrazine gives off toxic nitrogen compound fumes. Dissolves, swells, and disintegrates many plastics. Dangerous when exposed to heat, flame, or oxidizers. Hazardous polymerization may not occur. (EPA, 1998)
Health Hazard
This compound exhibits high acute toxicity as a result of exposure by all routes. Death or permanent injury may result after very short exposure to small quantities. Chronic exposure may cause pneumonia, liver damage, and kidney damage. (EPA, 1998)
Reactivity Profile
1,1-DIMETHYLHYDRAZINE is a powerful reducing agent. Ignition can occur on contact with oxidizing agents such hydrogen peroxide and fuming nitric acid, [Haz. Chem. Data(1966)]. Also reacts as a base to neutralize acids in exothermic reactions.
Belongs to the Following Reactive Group(s)
Response Recommendations
)
Firefighting - Response recommendations if the chemical is on fire (or near a fire).
Non-Fire Response - Response recommendations if the chemical isn't on fire (or near a fire).
Protective Clothing - Recommendations for protective gear and, in some cases, a table of breakthrough times for protective materials.
First Aid - Recommended first aid treatment for people exposed to the chemical.
List of data sources.
Non-Fire Response - Response recommendations if the chemical isn't on fire (or near a fire).
Protective Clothing - Recommendations for protective gear and, in some cases, a table of breakthrough times for protective materials.
First Aid - Recommended first aid treatment for people exposed to the chemical.
List of data sources.
Firefighting
Move containers from fire area if it can be done without risk. Dike fire control water for later disposal, do not scatter the material. Cool containers that are exposed to flames with water until well after fire is out, wear positive pressure breathing apparatus and special protective clothing. Isolate for one-half mile in all directions if tank car or truck is involved in fire.
Use dry chemical, carbon dioxide, water spray, or foam for small fires. In large fires water fog, carbon dioxide, and bicarbonate agents may allow flashback and explosive re-ignition. (EPA, 1998)
Use dry chemical, carbon dioxide, water spray, or foam for small fires. In large fires water fog, carbon dioxide, and bicarbonate agents may allow flashback and explosive re-ignition. (EPA, 1998)
Non-Fire Response
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to disperse vapors and dilute standing pools of liquid. (AAR, 2003)
Protective Clothing
Skin: Wear appropriate personal protective clothing to prevent skin contact.
Eyes: Wear appropriate eye protection to prevent eye contact.
Wash skin: The worker should immediately wash the skin when it becomes contaminated.
Remove: Work clothing that becomes wet should be immediately removed due to its flammability hazard(i.e. for liquids with flash point < 100°F)
Change: No recommendation is made specifying the need for the worker to change clothing after the work shift.
Provide: Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] (NIOSH, 2003)
Eyes: Wear appropriate eye protection to prevent eye contact.
Wash skin: The worker should immediately wash the skin when it becomes contaminated.
Remove: Work clothing that becomes wet should be immediately removed due to its flammability hazard(i.e. for liquids with flash point < 100°F)
Change: No recommendation is made specifying the need for the worker to change clothing after the work shift.
Provide: Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] (NIOSH, 2003)
_____Dupont Average Standardized Breakthrough Times_____
(for DIMETHYL HYDRAZINE)
Tychem® BR
greater than 480 min. (concentration: 95+%)
Tychem® CPF2
12 min. (concentration: 95+%)
Tychem® CPF4
12 min. (concentration: 95+%)
Tychem® LV
greater than 480 min. (concentration: 95+%)
Tychem® Reflector®
greater than 480 min. (concentration: 95+%)
Tychem® Responder®
greater than 480 min. (concentration: 98%)
Tychem® Responder® CSM
greater than 480 min. (concentration: 98%)
Tychem® SL
12 min. (concentration: 95+%)
Tychem® TK
greater than 480 min. (concentration: 95+%) (DuPont, 2008)
Copyrighted information of E.I. du Pont de Nemours and Company. Tychem® is a registered trademark of E.I. du Pont de Nemours and Company.
First Aid
Warning: Effects may be delayed for hours to days. Caution is advised.
Signs and Symptoms of Acute Dimethylhydrazine Exposure: Signs and symptoms of acute exposure to dimethylhydrazine may include eye irritation, facial numbness, facial swelling, and increased salivation. Headache, twitching, seizures, convulsions, and coma may also occur. Gastrointestinal effects include anorexia, nausea, and vomiting. Pulmonary edema and hypotension (low blood pressure) are common. Dimethylhydrazine is toxic to the liver, ruptures red blood cells, and may cause kidney damage. Dermal contact may result in strong skin and mucous membrane irritation.
Emergency Life-Support Procedures: Acute exposure to dimethylhydrazine may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as dimethylhydrazine-resistant sheeting and disposable bags to assist in preventing spread of contamination.
Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to dimethylhydrazine.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
4. Transport to a health care facility.
Dermal/Eye Exposure:
1. Remove victims from exposure. Emergency personnel should avoid self- exposure to dimethylhydrazine.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
3. Remove contaminated clothing as soon as possible.
4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes.
5. Wash exposed skin areas THOROUGHLY with soap and water.
6. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
7. Transport to a health care facility.
Ingestion Exposure:
1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
2. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
3. Vomiting may be induced with syrup of Ipecac. If elapsed time since ingestion of dimethylhydrazine is unknown or suspected to be greater than 30 minutes, do not induce vomiting and proceed to Step
4. Ipecac should not be administered to children under 6 months of age.Warning: Ingestion of dimethylhydrazine may result in sudden onset of seizures or loss of consciousness. Syrup of Ipecac should be administered only if victims are alert, have an active gag-reflex, and show no signs of impending seizure or coma. If ANY uncertainty exists, proceed to Step
4.The following dosages of Ipecac are recommended: children up to 1 year old, 10 mL (1/3 oz); children 1 to 12 years old, 15 mL (1/2 oz); adults, 30 mL (1 oz). Ambulate (walk) the victims and give large quantities of water. If vomiting has not occurred after 15 minutes, Ipecac may be readministered. Continue to ambulate and give water to the victims. If vomiting has not occurred within 15 minutes after second administration of Ipecac, administer activated charcoal.
4. Activated charcoal may be administered if victims are conscious and alert. Use 15 to 30 g (1/2 to 1 oz) for children, 50 to 100 g (1-3/4 to 3-1/2 oz) for adults, with 125 to 250 mL (1/2 to 1 cup) of water.
5. Promote excretion by administering a saline cathartic or sorbitol to conscious and alert victims. Children require 15 to 30 g (1/2 to 1 oz) of cathartic; 50 to 100 g (1-3/4 to 3-1/2 oz) is recommended for adults.
6. Transport to a health care facility. (EPA, 1998)
Signs and Symptoms of Acute Dimethylhydrazine Exposure: Signs and symptoms of acute exposure to dimethylhydrazine may include eye irritation, facial numbness, facial swelling, and increased salivation. Headache, twitching, seizures, convulsions, and coma may also occur. Gastrointestinal effects include anorexia, nausea, and vomiting. Pulmonary edema and hypotension (low blood pressure) are common. Dimethylhydrazine is toxic to the liver, ruptures red blood cells, and may cause kidney damage. Dermal contact may result in strong skin and mucous membrane irritation.
Emergency Life-Support Procedures: Acute exposure to dimethylhydrazine may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as dimethylhydrazine-resistant sheeting and disposable bags to assist in preventing spread of contamination.
Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to dimethylhydrazine.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
4. Transport to a health care facility.
Dermal/Eye Exposure:
1. Remove victims from exposure. Emergency personnel should avoid self- exposure to dimethylhydrazine.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
3. Remove contaminated clothing as soon as possible.
4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes.
5. Wash exposed skin areas THOROUGHLY with soap and water.
6. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
7. Transport to a health care facility.
Ingestion Exposure:
1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support.
2. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
3. Vomiting may be induced with syrup of Ipecac. If elapsed time since ingestion of dimethylhydrazine is unknown or suspected to be greater than 30 minutes, do not induce vomiting and proceed to Step
4. Ipecac should not be administered to children under 6 months of age.Warning: Ingestion of dimethylhydrazine may result in sudden onset of seizures or loss of consciousness. Syrup of Ipecac should be administered only if victims are alert, have an active gag-reflex, and show no signs of impending seizure or coma. If ANY uncertainty exists, proceed to Step
4.The following dosages of Ipecac are recommended: children up to 1 year old, 10 mL (1/3 oz); children 1 to 12 years old, 15 mL (1/2 oz); adults, 30 mL (1 oz). Ambulate (walk) the victims and give large quantities of water. If vomiting has not occurred after 15 minutes, Ipecac may be readministered. Continue to ambulate and give water to the victims. If vomiting has not occurred within 15 minutes after second administration of Ipecac, administer activated charcoal.
4. Activated charcoal may be administered if victims are conscious and alert. Use 15 to 30 g (1/2 to 1 oz) for children, 50 to 100 g (1-3/4 to 3-1/2 oz) for adults, with 125 to 250 mL (1/2 to 1 cup) of water.
5. Promote excretion by administering a saline cathartic or sorbitol to conscious and alert victims. Children require 15 to 30 g (1/2 to 1 oz) of cathartic; 50 to 100 g (1-3/4 to 3-1/2 oz) is recommended for adults.
6. Transport to a health care facility. (EPA, 1998)
Physical Properties
)
This section contains physical properties, flammability limits, and toxic thresholds for this chemical (see
definitions of each property).
More property data is available for common chemicals.
Guide to toxic levels of concern (AEGLs, ERPGs, TEELs, and IDLH).
List of data sources.
Guide to toxic levels of concern (AEGLs, ERPGs, TEELs, and IDLH).
List of data sources.
| Molecular Formula: |
|
Flash Point:
5.0 ° F
(EPA, 1998)
Lower Explosive Limit:
2.0 %
(EPA, 1998)
Upper Explosive Limit:
95.0 %
(EPA, 1998)
Autoignition Temperature:
480.0 ° F
(NTP, 1992)
Melting Point:
-72.0 ° F
(EPA, 1998)
Vapor Pressure:
157.0 mm Hg
at 77.0 ° F
(EPA, 1998)
Vapor Density:
1.94
(EPA, 1998)
Specific Gravity:
0.7914
at 71.6 ° F
(EPA, 1998)
Boiling Point:
147.0 ° F
at 760.0 mm Hg
(EPA, 1998)
Molecular Weight:
60.1
(EPA, 1998)
Water Solubility:
Decomposes
(NTP, 1992)
| AEGL-1 | AEGL-2 | AEGL-3 |
|---|---|---|
| NR = Not recommended due to insufficient data |
18.0 ppm for 10 minutes 6.0 ppm for 30 minutes 3.0 ppm for 60 minutes 0.75 ppm for 4 hours 0.38 ppm for 8 hours |
65.0 ppm for 10 minutes 22.0 ppm for 30 minutes 11.0 ppm for 60 minutes 2.7 ppm for 4 hours 1.4 ppm for 8 hours |
| (NRC, 2008) | ||
ERPG:
data unavailable
TEEL:
data unavailable
IDLH:
15.0 ppm
; A potential human carcinogen.
(NIOSH, 2003)
Regulatory Information
)
Regulatory Names - Names under which this chemical is regulated under several U.S. federal laws: CAA (Clean Air Act of 1990), CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act of 1980, also known as Superfund), EPCRA (Emergency Planning and Community Right-to-Know Act, also known as SARA Title III), and RCRA (Resource Conservation and Recovery Act of 1976).
CAA RMP - Indicates whether this chemical is regulated under Section 112(r) of the Clean Air Act, which lists about 100 toxic, flammable, or explosive hazardous substances. (Section 112(r) mandates the Risk Management Plan regulations.) For listed chemicals, the Threshold Quantity (from 40 CFR 68) is also shown. Facilities that use more than the threshold quantity of a listed chemical in a process are subject to the CAA accidental release prevention provisions.
CERCLA - Indicates whether this chemical is listed as a hazardous substance under CERCLA. For listed chemicals, the Reportable Quantity (from 40 CFR 302) is also shown. Facilities that spill more than the reportable quantity of a listed chemical must report it to federal, state, and local governments.
EHS (EPCRA 302) - Indicates whether this chemical is listed as an Extremely Hazardous Substance under Section 302 of EPCRA. For listed chemicals, the Threshold Planning Quantity (from 40 CFR 355) is also shown. Facilities that store more than the threshold quantity of an EHS chemical must meet the reporting, community right-to-know, and emergency planning requirements of EPCRA.
TRI (EPCRA 313) - Indicates whether this chemical is listed as a toxic chemical under Section 313 (Toxics Release Inventory) of EPCRA. Facilities that manufacture, store, or use significant amounts of Section 313 chemicals may be required to submit annual reports about any releases into the environment (see 40 CFR 372).
RCRA Chemical Code - 4-character identification code assigned to this substance under RCRA.
CAA RMP - Indicates whether this chemical is regulated under Section 112(r) of the Clean Air Act, which lists about 100 toxic, flammable, or explosive hazardous substances. (Section 112(r) mandates the Risk Management Plan regulations.) For listed chemicals, the Threshold Quantity (from 40 CFR 68) is also shown. Facilities that use more than the threshold quantity of a listed chemical in a process are subject to the CAA accidental release prevention provisions.
CERCLA - Indicates whether this chemical is listed as a hazardous substance under CERCLA. For listed chemicals, the Reportable Quantity (from 40 CFR 302) is also shown. Facilities that spill more than the reportable quantity of a listed chemical must report it to federal, state, and local governments.
EHS (EPCRA 302) - Indicates whether this chemical is listed as an Extremely Hazardous Substance under Section 302 of EPCRA. For listed chemicals, the Threshold Planning Quantity (from 40 CFR 355) is also shown. Facilities that store more than the threshold quantity of an EHS chemical must meet the reporting, community right-to-know, and emergency planning requirements of EPCRA.
TRI (EPCRA 313) - Indicates whether this chemical is listed as a toxic chemical under Section 313 (Toxics Release Inventory) of EPCRA. Facilities that manufacture, store, or use significant amounts of Section 313 chemicals may be required to submit annual reports about any releases into the environment (see 40 CFR 372).
RCRA Chemical Code - 4-character identification code assigned to this substance under RCRA.
| Regulatory Names: |
|
CAA RMP:
Regulated chemical with a Threshold Quantity of 15000 pounds.
CERCLA:
Regulated chemical with a Reportable Quantity of 10 pounds.
EHS (EPCRA 302):
Regulated chemical with a
Reportable Quantity of 10 pounds and a
Threshold Planning Quantity of 1000 pounds.
TRI (EPCRA 313):
Regulated chemical.
RCRA Chemical Code:
U098
Alternate Chemical Names
)
This section provides a listing of alternate names for this chemical, including trade names, synonyms, and foreign names.
- 1,1-DIMETHYL HYDRAZINE
- 1,1-DIMETILHIDRAZINA (DOT SPANISH)
- AS-DIMETHYLHYDRAZINE
- ASYM DIMETHYLHYDRAZINE
- ASYMMETRIC DIMETHYLHYDRAZINE
- DIMAZIN
- DIMAZINE
- DIMETHYLHYDRAZINE
- DIMETHYLHYDRAZINE UNSYMMETRICAL
- DIMETHYLHYDRAZINE, UNSYMMETRICAL
- DIMETHYLHYDRAZINE, [UNSYMMETRICAL]
- DIMETILHIDRAZINA, ASIMÉTRICA (DOT SPANISH)
- DIMÉTHYL-1,1 HYDRAZINE (DOT FRENCH)
- DIMÉTHYLHYDRAZINE, ASYMÉTRIQUE (DOT FRENCH)
- DMH
- GEM-DIMETHYLHYDRAZINE
- HYDRAZINE, 1,1-DIMETHYL
- HYDRAZINE, 1,1-DIMETHYL-
- N,N-DIMETHYLHYDRAZINE
- RCRA WASTE NUMBER U098
- U-DIMETHYLHYDRAZINE
- UDMH
- UN 1163
- UNS-DIMETHYLHYDRAZINE
- UNSYM-DIMETHYLHYDRAZINE
- UNSYMMETRICAL DIMETHYLHYDRAZINE
- UNSYMMETRICAL-DIMETHYLHYDRAZINE
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