Chemical data sheet for:
HYDRAZINE, AQUEOUS SOLUTIONS, WITH MORE THAN 64% HYDRAZINE
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| Section 1 - Chemical Identifiers | Section 4 - Physical Properties |
| Section 2 - Hazards | Section 5 - Regulatory Information |
| Section 3 - Response Recommendations | Section 6 - Alternate Chemical Names |
Section 1 - Chemical Identifiers
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| CAS Number | UN/NA Number | STCC Number | CHRIS Code |
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none | none |
| NFPA 704: |
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DOT Hazard Label: |
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General Description
Colorless liquid with an ammonia-like odor. A violent poison. Causes delayed eye irritation. Very corrosive, attacks glass, rubber, and cork. Corrodes molybdenum steels such as Allegheny stainless 316. (NOAA Reactivity 2007)
Section 2 - Hazards
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Reactivity Alerts
- Strong Reducing Agent
- Air-Reactive
Air & Water Reactions
Fumes in air. Water soluble.
Fire Hazard
Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a "P" may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. (DOT, 2000)
Health Hazard
May cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution. (DOT, 2000)
Reactivity Profile
HYDRAZINE, AQUEOUS SOLUTIONS, WITH MORE THAN 64% HYDRAZINE are strongly basic and are powerful reducing agents. Note that a 64% solution corresponds to the composition hydrazine hydrate (N2H4.H2O). Spontaneous ignition can occur with hydrogen peroxide and nitric acid. Contact with metallic oxide surfaces may lead to flaming decomposition [Haz. Chem. Data (1966)]. The reaction between 2,4-dinitrochlorobenzene and hydrazine hydrate shattered the reaction flask [Wischmeyer 1967]. Spontaneous ignition occurs when nitrous oxide and hydrazine are mixed [Mellor 8, Supp. 2:214(1967)]. Potassium and sodium dichromate react explosively with hydrazine [Mellor 11:234(1946-1947)]. Hydrazine hydrate reacts with stannous chloride to give stannous dihydrazinechloride, which decomposes explosively when heated [Mellor 7:430(1946-1947)]. Explodes during distillation if traces of air are present. Affected by UV and metal ion catalysis [Merck, 11th ed., 1989]. (NOAA REACTIVITY, 2007)
Belongs to reactive group(s)
- Amines
- Inorganic Reducing Agents
Section 3 - Response Recommendations
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Fire Fighting
Some of these materials may react violently with water.
SMALL FIRES: Dry chemical, CO2, water spray or alcohol-resistant foam.
LARGE FIRES: Water spray, fog or alcohol-resistant foam. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Do not get water inside containers.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (DOT, 2000)
SMALL FIRES: Dry chemical, CO2, water spray or alcohol-resistant foam.
LARGE FIRES: Water spray, fog or alcohol-resistant foam. Move containers from fire area if you can do it without risk. Dike fire control water for later disposal; do not scatter the material. Do not get water inside containers.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (DOT, 2000)
Non-Fire Response
Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. A vapor suppressing foam may be used to reduce vapors. Absorb with earth, sand or other non-combustible material and transfer to containers (except for Hydrazine). Use clean non-sparking tools to collect absorbed material.
LARGE SPILLS: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor; but may not prevent ignition in closed spaces. (DOT, 2000)
LARGE SPILLS: Dike far ahead of liquid spill for later disposal. Water spray may reduce vapor; but may not prevent ignition in closed spaces. (DOT, 2000)
Protective Clothing
First Aid
Move victim to fresh air. Call 911 or emergency medical service. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved, and take precautions to protect themselves. (DOT, 2000)
Section 4 - Physical Properties
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| Molecular Formula: |
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Flash Point: data unavailable
Lower Explosive Limit: data unavailable
Upper Explosive Limit: data unavailable
Auto Ignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density: data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight: data unavailable
Water Solubility: data unavailable
AEGL: data unavailable
| ERPG-1 | ERPG-2 | ERPG-3 |
| 0.5 ppm | 5.0 ppm | 30.0 ppm |
| (AIHA, 2003) |
TEEL: ERPG supersedes TEEL
IDLH: 50.0 ppm ; A potential human carcinogen. (NIOSH, 2003)
Section 5 - Regulatory Information
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Regulatory Names
- HYDRAZINE
CAA RMP: Regulated chemical with a Threshold Quantity of 15000 pounds.
CERCLA: Regulated chemical with a Reportable Quantity of 1 pounds.
EPCRA 302 EHS: Regulated chemical with a Reportable Quantity of 1 pounds and a Threshold Planning Quantity of 1000 pounds.
TRI (EPCRA 313): Regulated chemical.
RCRA chemical code: U133
Section 6 - Alternate Chemical Names
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- HIDRAZINA, SOLUCIÓN ACUOSA, CON MÁS DEL 64% DE HIDRAZINA (DOT SPANISH)
- HYDRAZINE
- HYDRAZINE, [AQUEOUS SOLUTION, WITH >= 64% HYDRAZINE BY WEIGHT]
- HYDRAZINE, SOLUTION AQUEUSE, CONTENANT PLUS DE 64% D'HYDRAZINE (DOT FRENCH)
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