Chemical Datasheet
HYDROGEN SELENIDE, ANHYDROUS |
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Chemical Identifiers
The
Chemical Identifier fields
include common identification numbers, the
NFPA diamond
U.S. Department of Transportation hazard labels, and a general
description of the chemical. The information in CAMEO Chemicals comes
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data sources.
CAS Number | UN/NA Number | DOT Hazard Label | USCG CHRIS Code |
---|---|---|---|
|
|
none | |
NIOSH Pocket Guide | International Chem Safety Card | ||
Hydrogen selenide |
NFPA 704
data unavailable
General Description
Hydrogen selenide is a colorless gas with an offensive odor. It is highly flammable and toxic. It may be irritating to eyes and mucous membranes. It is heavier than air. Long term exposure to low concentrations or short term exposure to high concentrations can result in adverse health effects from inhalation. If exposed to prolonged fire or intense heat the containers may violently rupture or rocket.
Rate of onset: Immediate
Persistence: Minutes - hours
Odor threshold: 0.3 ppm
Source/use/other hazard: Metals &semiconductor preparation; highly flammable/explosive; can cause burns/frostbite; decomposes rapidly to form elemental selenium
Rate of onset: Immediate
Persistence: Minutes - hours
Odor threshold: 0.3 ppm
Source/use/other hazard: Metals &semiconductor preparation; highly flammable/explosive; can cause burns/frostbite; decomposes rapidly to form elemental selenium
Hazards
The
Hazard fields
include
special hazard alerts
air and water
reactions, fire hazards, health hazards, a reactivity profile, and
details about
reactive groups assignments
and
potentially incompatible absorbents.
The information in CAMEO Chemicals comes from a variety of
data sources.
Reactivity Alerts
- Highly Flammable
Air & Water Reactions
Highly flammable. Soluble in water.
Fire Hazard
It is extremely flammable; may be ignited by heat, sparks, or flames. Vapors may travel to a source of ignition and flash back. Container may explode in heat of fire. It is dangerous and forms explosive mixtures with air. It can decompose into toxic fumes. Incompatible with acid, water, halogenated hydrocarbons, oxidizers, hydrogen peroxide, and nitric acid. It should be stored out of the direct rays of the sun. Keep away from heat and flames. (EPA, 1998)
Health Hazard
It is a hazardous compound which can cause damage to the lungs and liver. Those experiencing dermatitis, chronic bronchitis, or any form of skin allergy or respiratory tract infection are at a greater risk. (EPA, 1998)
Reactivity Profile
HYDROGEN SELENIDE is a colorless, flammable gas of unpleasant odor, a deadly poison by inhalation. It forms explosive mixtures with air. It reacts vigorously with strong oxidizing reagents, e.g., hydrogen peroxide, nitric acid [Sax, 9th ed., 1996, p.1843].
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents
No information available.
Response Recommendations
The
Response Recommendation fields
include isolation and evacuation distances, as well as recommendations for
firefighting, non-fire response, protective clothing, and first aid. The
information in CAMEO Chemicals comes from a variety of
data sources.
Isolation and Evacuation
Excerpt from ERG Guide 117 [Gases - Toxic - Flammable (Extreme Hazard)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 2202 datasheet.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. (ERG, 2024)
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 2202 datasheet.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. (ERG, 2024)
Firefighting
Isolate for 1/2 mile in all directions if tank car or truck is involved in fire. Stay upwind; keep out of low areas. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire. Wear self-contained breathing apparatus and full protective clothing. Cool containers that are exposed to flames with water until well after the fire is out.
Let tank car, tank truck, or storage tank burn unless leak can be stopped. Small fires: dry chemical or carbon dioxide. Large fires: water spray, fog, or foam. (EPA, 1998)
Let tank car, tank truck, or storage tank burn unless leak can be stopped. Small fires: dry chemical or carbon dioxide. Large fires: water spray, fog, or foam. (EPA, 1998)
Non-Fire Response
Excerpt from ERG Guide 117 [Gases - Toxic - Flammable (Extreme Hazard)]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from 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. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Do not direct water at spill or source of leak. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Isolate area until gas has dispersed. Consider igniting spill or leak to eliminate toxic gas concerns. (ERG, 2024)
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from 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. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Do not direct water at spill or source of leak. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Isolate area until gas has dispersed. Consider igniting spill or leak to eliminate toxic gas concerns. (ERG, 2024)
Protective Clothing
Excerpt from NIOSH Pocket Guide for Hydrogen selenide
:
Skin: FROSTBITE - Compressed gases may create low temperatures when they expand rapidly. Leaks and uses that allow rapid expansion may cause a frostbite hazard. Wear appropriate personal protective clothing to prevent the skin from becoming frozen.
Eyes: FROSTBITE - Wear appropriate eye protection to prevent eye contact with the liquid that could result in burns or tissue damage from frostbite.
Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).
Remove: WHEN WET (FLAMMABLE) - Work clothing that becomes wet should be immediately removed due to its flammability hazard (i.e., for liquids with a flash point <100°F).
Change: No recommendation is made specifying the need for the worker to change clothing after the workshift.
Provide: FROSTBITE WASH - Quick drench facilities and/or eyewash fountains should be provided within the immediate work area for emergency use where there is any possibility of exposure to liquids that are extremely cold or rapidly evaporating. (NIOSH, 2024)
Skin: FROSTBITE - Compressed gases may create low temperatures when they expand rapidly. Leaks and uses that allow rapid expansion may cause a frostbite hazard. Wear appropriate personal protective clothing to prevent the skin from becoming frozen.
Eyes: FROSTBITE - Wear appropriate eye protection to prevent eye contact with the liquid that could result in burns or tissue damage from frostbite.
Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).
Remove: WHEN WET (FLAMMABLE) - Work clothing that becomes wet should be immediately removed due to its flammability hazard (i.e., for liquids with a flash point <100°F).
Change: No recommendation is made specifying the need for the worker to change clothing after the workshift.
Provide: FROSTBITE WASH - Quick drench facilities and/or eyewash fountains should be provided within the immediate work area for emergency use where there is any possibility of exposure to liquids that are extremely cold or rapidly evaporating. (NIOSH, 2024)
DuPont Tychem® Suit Fabrics
Tychem® Fabric Legend
QS = Tychem 2000 SFR |
QC = Tychem 2000 |
SL = Tychem 4000 |
C3 = Tychem 5000 |
TF = Tychem 6000 |
TP = Tychem 6000 FR |
RC = Tychem RESPONDER® CSM |
TK = Tychem 10000 |
RF = Tychem 10000 FR |
Testing Details
The fabric permeation data was generated for DuPont by a third party
laboratory. Permeation data for industrial chemicals is obtained per
ASTM F739. Normalized breakthrough times (the time at which the
permeation rate exceeds 0.1 μg/cm2/min) are reported in minutes. All
chemicals have been tested between approximately 20°C and 27°C unless
otherwise stated. All chemicals have been tested at a concentration of
greater than 95% unless otherwise stated.
Chemical warfare agents (Lewisite, Sarin, Soman, Sulfur Mustard, Tabun
and VX Nerve Agent) have been tested at 22°C and 50% relative humidity
per military standard MIL-STD-282. "Breakthrough time" for chemical
warfare agents is defined as the time when the cumulative mass which
permeated through the fabric exceeds the limit in MIL-STD-282 [either
1.25 or 4.0 μg/cm2].
A Caution from DuPont
This information is based upon technical data that DuPont believes to
be reliable on the date issued. It is subject to revision as additional
knowledge and experience are gained. The information reflects
laboratory performance of fabrics, not complete garments, under
controlled conditions. It is intended for informational use by persons
having technical skill for evaluation under their specific end-use
conditions, at their own discretion and risk. It is the user's
responsibility to determine the level of toxicity and the proper
personal protective equipment needed. Anyone intending to use this
information should first verify that the garment selected is suitable
for the intended use. In many cases, seams and closures have shorter
breakthrough times and higher permeation rates than the fabric. If
fabric becomes torn,abraded or punctured, or if seams or closures fail,
or if attached gloves, visors, etc. are damaged, end user should
discontinue use of garment to avoid potential exposure to chemical.
Since conditions of use are outside our control, DuPont makes no
warranties, express or implied, including, without limitation, no
warranties of merchantability or fitness for a particular use and
assume no liability in connection with any use of this information.
This information is not intended as a license to operate under or a
recommendation to infringe any patent, trademark or technical
information of DuPont or others covering any material or its use.
Chemical | CAS Number | State | QS | QC | SL | C3 | TF | TP | RC | TK | RF |
---|---|---|---|---|---|---|---|---|---|---|---|
Hydrogen selenide | 7783-07-5 | Vapor | >480 | >480 | >480 |
> indicates greater than.
Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be used around heat, flames, sparks or in potentially flammable or explosive environments. Only...
...Tychem® ThermoPro, Tychem® Reflector® and Tychem® TK styles 600T/601T
(with aluminized outer suit) garments are designed and tested to help
reduce burn injury during escape from a flash fire. Users of Tychem®
ThermoPro, Tychem® Reflector® and Tychem® TK styles 600T/601T (with
aluminized outer suit) garments should not knowingly enter an explosive
environment. Tychem® garments with attached socks must be worn inside
protective outer footwear and are not suitable as outer footwear. These
attached socks do not have adequate durability or slip resistance to be
worn as the outer foot covering.
(DuPont, 2024)
First Aid
Signs and Symptoms of Hydrogen Selenide Exposure: Acute exposure to hydrogen selenide may include garlic odor of the breath, metallic taste, dizziness, weakness, fatigue, nausea, and vomiting. Bluing of skin, irritation of the eyes, nasal secretion, pain in the chest, difficulty in breathing, coughing, irritation of the respiratory tract resulting in bronchitis and pulmonary edema may also occur. In addition, CNS depression, hypotension (low blood pressure), cardiopulmonary arrest, and coma may also be observed.
Emergency Life-Support Procedures: Acute exposure to hydrogen selenide 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 plastic sheeting and disposable plastic bags to assist in preventing spread of contamination.
Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to hydrogen selenide.
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 100% humidified 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 hydrogen selenide.
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 100% humidified 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. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
6. Transport to a health care facility.
Ingestion Exposure:
Note: Ingestion of hydrogen selenide gas is not expected to be a significant route of 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 100% humidified 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. Transport to a health care facility. (EPA, 1998)
Emergency Life-Support Procedures: Acute exposure to hydrogen selenide 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 plastic sheeting and disposable plastic bags to assist in preventing spread of contamination.
Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to hydrogen selenide.
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 100% humidified 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 hydrogen selenide.
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 100% humidified 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. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
6. Transport to a health care facility.
Ingestion Exposure:
Note: Ingestion of hydrogen selenide gas is not expected to be a significant route of 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 100% humidified 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. Transport to a health care facility. (EPA, 1998)
Physical Properties
The
Physical Property fields
include properties such as vapor pressure and
boiling point, as well as explosive limits and
toxic exposure thresholds
The information in CAMEO Chemicals comes from a variety of
data sources.
Note: For Vapor Density and Specific Gravity, comparing the value to 1.0 can tell you if the chemical will likely sink/rise in air or sink/float in fresh water (respectively). Short phrases have been added to those values below as an aid. However, make sure to also consider the circumstances of a release. The Vapor Density comparisons are only valid when the gas escaping is at the same temperature as the surrounding air itself. If the chemical is escaping from a container where it was pressurized or refrigerated, it may first escape and behave as a heavy gas and sink in the air (even if it has a Vapor Density value less than 1). Also, the Specific Gravity comparisons are for fresh water (density 1.0 g/mL). If your spill is in salt water (density about 1.027 g/mL), you need to adjust the point of comparison. There are some chemicals that will sink in fresh water and float in salt water.
Note: For Vapor Density and Specific Gravity, comparing the value to 1.0 can tell you if the chemical will likely sink/rise in air or sink/float in fresh water (respectively). Short phrases have been added to those values below as an aid. However, make sure to also consider the circumstances of a release. The Vapor Density comparisons are only valid when the gas escaping is at the same temperature as the surrounding air itself. If the chemical is escaping from a container where it was pressurized or refrigerated, it may first escape and behave as a heavy gas and sink in the air (even if it has a Vapor Density value less than 1). Also, the Specific Gravity comparisons are for fresh water (density 1.0 g/mL). If your spill is in salt water (density about 1.027 g/mL), you need to adjust the point of comparison. There are some chemicals that will sink in fresh water and float in salt water.
Chemical Formula: |
|
Flash Point: data unavailable
Lower Explosive Limit (LEL):
Extremely flammable.
(EPA, 1998)
Upper Explosive Limit (UEL):
Extremely flammable.
(EPA, 1998)
Autoignition Temperature: data unavailable
Melting Point:
-86.31°F
(EPA, 1998)
Vapor Pressure:
6536 to 9120 mmHg
at 64.4 to 87.44 °F
(EPA, 1998)
Vapor Density (Relative to Air):
2.12
at -43.6°F
(EPA, 1998)
- Heavier than air; will sink
Specific Gravity: data unavailable
Boiling Point:
-42.3°F
at 760 mmHg
(EPA, 1998)
Molecular Weight:
80.98
(EPA, 1998)
Water Solubility:
0.9 %
at 73°F
(NIOSH, 2024)
Ionization Energy/Potential:
9.88 eV
(NIOSH, 2024)
IDLH:
1 ppm
(NIOSH, 2024)
AEGLs (Acute Exposure Guideline Levels)
Exposure Period | AEGL-1 | AEGL-2 | AEGL-3 |
---|---|---|---|
10 minutes | NR | 0.22 ppm | 0.67 ppm |
30 minutes | NR | 0.15 ppm | 0.44 ppm |
60 minutes | NR | 0.11 ppm | 0.33 ppm |
4 hours | NR | 0.064 ppm | 0.19 ppm |
8 hours | NR | 0.048 ppm | 0.14 ppm |
NR = Not recommended due to insufficient data
(NAC/NRC, 2024)
ERPGs (Emergency Response Planning Guidelines)
Chemical | ERPG-1 | ERPG-2 | ERPG-3 |
---|---|---|---|
Hydrogen Selenide (7783-07-5) | NA | 0.2 ppm | 2 ppm |
NA = not appropriate.
(AIHA, 2022)
PACs (Protective Action Criteria)
Chemical | PAC-1 | PAC-2 | PAC-3 |
---|---|---|---|
Hydrogen selenide (7783-07-5) | 0.045 ppm | 0.11 ppm | 0.33 ppm |
(DOE, 2024)
Regulatory Information
The
Regulatory Information fields
include information from
the U.S. Environmental Protection Agency's Title III Consolidated List of
Lists,
the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility
Anti-Terrorism Standards,
and the U.S. Occupational Safety and Health Administration's
Process Safety Management of Highly Hazardous Chemicals Standard List
(see more about these
data sources).
EPA Consolidated List of Lists
Regulatory Name | CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ | EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
---|---|---|---|---|---|---|---|
Hydrogen selenide | 7783-07-5 | 10 pounds | 10 pounds | 313c | 500 pounds | ||
Selenium Compounds | N725 | & | 313 |
- 313c indicates that although not listed by name and CAS number, this chemical is reportable under one or more of the EPCRA section 313 chemical categories.
- & indicates that no RQ is assigned to this generic or broad class, although the class is a CERCLA hazardous substance. See 50 Federal Register 13456 (April 4, 1985).
(EPA List of Lists, 2024)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
RELEASE | THEFT | SABOTAGE | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Chemical of Interest | CAS Number | Min Conc | STQ | Security Issue |
Min Conc | STQ | Security Issue |
Min Conc | STQ | Security Issue |
Hydrogen selenide | 7783-07-5 | 1.00 % | 10000 pounds | flammable | 0.07 % | 15 pounds | WME |
- WME = weapons of mass effect.
(CISA, 2007)
OSHA Process Safety Management (PSM) Standard List
Chemical Name | CAS Number | Threshold Quantity (TQ) |
---|---|---|
Hydrogen Selenide | 7783-07-5 | 150 pounds |
(OSHA, 2019)
Alternate Chemical Names
This section provides a listing of alternate names for this chemical,
including trade names and synonyms.
- DIHYDROGEN MONOSELENIDE
- DIHYDROGEN SELENIDE
- HYDROGEN SELENIDE
- HYDROGEN SELENIDE, ANHYDROUS
- SELANE
- SELENIUM ANHYDRIDE
- SELENIUM DIHYDRIDE
- SELENIUM HYDRIDE
- SELENIUM HYDRIDE (H2SE)