MSDS Name:Phenylarsine oxide 97%
Synonym:Oxophenylarsin

EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Corrosive.Cancer suspect agent.
Potential Health Effects
Eye:
Causes eye burns.
Skin:
Causes skin burns.
Ingestion:
May be fatal if swallowed. May cause irritation of the digestive tract. May cause liver damage. May cause central nervous system effects.
Inhalation:
May cause respiratory tract irritation. May cause systemic effects.
Chronic:
Chronic ingestion is characterized by weakness, anorexia, gastrointestinal disturbances, impairment of cognitive function, peripheral neuropathy, and skin disorders. Reynauds phenomenon has been reported in association with long-term exposure.

Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub eyes or keep eyes closed.
Skin:
Get medical aid immediately. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion.
Extinguishing Media:
Use water spray, dry chemical, or carbon dioxide.

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.
Provide ventilation.

Handling:
Wash thoroughly after handling. Use with adequate ventilation.
Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 637-03-6: United Kingdom, WEL - TWA: (listed as arsenic compounds, n.o.s.): mg/m3 TWA (except arsine, as As) United Kingdom, WEL - STEL: (listed as arsenic compounds, n.o.s.) 0.3 mg/m3 STEL (except arsine, as As) Japan: (listed as arsenic compounds, n.o.s.): 3 ??g/m3 OEL (refere value, as As) Spain: (listed as arsenic compounds, n.o.s.): 0.1 mg/m3 VLA-ED (a As) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Physical State: Solid
Color: off-white
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 145 - 148 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: insoluble
Specific Gravity/Density:
Molecular Formula: C6H5AsO
Molecular Weight: 168.03

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, oxides of arsenic.
Hazardous Polymerization: Has not been reported.

RTECS#:
CAS# 637-03-6: CH8100000 LD50/LC50:
Not available.
Oral, rat: LD50 = 10-25 Carcinogenicity:
Phenylarsine oxide - IARC: Group 1 carcinogen (listed as Arsenic compounds, n.o.s.).
Other:
See actual entry in RTECS for complete information.

Dispose of in a manner consistent with federal, state, and local regulations.

IATA
Shipping Name: ORGANOARSENIC COMPOUND, N.O.S.*
Hazard Class: 6.1
UN Number: 3280
Packing Group: II
IMO
Shipping Name: ORGANOARSENIC COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3280
Packing Group: II
RID/ADR
Shipping Name: ORGANOARSENIC COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3280
Packing group: II

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T N
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 20/21 When using do not eat, drink or smoke.
S 28A After contact with skin, wash immediately with
plenty of water.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 637-03-6: No information available.
Canada
CAS# 637-03-6 is listed on Canadas DSL List.
CAS# 637-03-6 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 637-03-6 is listed on the TSCA inventory.