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Chemical Datasheet

DIPHENYLCHLOROARSINE

6.1 - Poison

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 712-48-1   (DIPHENYLCHLOROARSINE)
  • 1699 (liquid)
  • 3450 (solid)
  • Poison
none
NIOSH Pocket Guide International Chem Safety Card
Arsenic (organic compounds, as As)
  • CHLORODIPHENYLARSINE
NFPA 704
data unavailable
General Description
A chemical warfare vomiting agent. It is a colorless crystalline solid, or a dark-brown liquid. Strongly irritating to skin and eyes. Toxic by ingestion and inhalation.

Hazards

Reactivity Alerts
Air & Water Reactions
Slowly decomposed by water [Hawley].
Fire Hazard
For information on chemical warfare vomiting agents see the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways. (ERG, 2024)
Health Hazard
For information on chemical warfare vomiting agents see the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. Avoid any skin contact. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental contamination. (ERG, 2024)
Reactivity Profile
DIPHENYLCHLOROARSINE is incompatible with strong oxidizing agents, amines, and alkalis. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291].
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

Response Recommendations

Isolation and Evacuation
For initial isolation and protective action distances for chemical warfare vomiting agents see the Chemical Warfare Agents table in the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Firefighting
For information on chemical warfare vomiting agents see the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Water spray, fog or regular foam. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal. Avoid aiming straight or solid streams directly onto the product.

FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. 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 in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)
Non-Fire Response
For information on chemical warfare vomiting agents see the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. For solids, prevent dust cloud and avoid inhalation of dust. (ERG, 2024)
Protective Clothing
For information on chemical warfare vomiting agents see the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2024)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
For information on chemical warfare vomiting agents see the ERG Criminal or Terrorist Use of CBR Agents. (ERG, 2024)

Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:

Refer to the "General First Aid" section. (ERG, 2024)

Physical Properties

Chemical Formula:
  • C12H10AsCl
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

Interim AEGLs for Diphenylchloroarsine (712-48-1)
Exposure Period AEGL-1 AEGL-2 AEGL-3
10 minutes NR 1.1 mg/m3 3.4 mg/m3
30 minutes NR 0.79 mg/m3 2.4 mg/m3
60 minutes NR 0.39 mg/m3 1.2 mg/m3
4 hours NR 0.098 mg/m3 0.3 mg/m3
8 hours NR 0.049 mg/m3 0.15 mg/m3
NR = Not recommended due to insufficient data
(NAC/NRC, 2024)

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Diphenylchloroarsine; (Chlorodiphenylarsine) (712-48-1) 0.035 mg/m3 0.39 mg/m3 1.2 mg/m3
(DOE, 2024)

Regulatory Information

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
Arsenic Compounds N020 & 313

(EPA List of Lists, 2024)

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names