MSDS Name:   Phenylarsine oxide solution, 0.025N
Synonym:   Oxophenylarsine solution.
Company:   AboutChem.com

**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 637-03-6 |Oxophenylarsine | 0.05-0.2 | 211-275-3 |
|----------------|--------------------------------------|----------|-----------|
| 1310-73-2 |Sodium hydroxide | 0.1-0.5 | 215-185-5 |
|----------------|--------------------------------------|----------|-----------|
| 7732-18-5 |Water | >99.3 | 231-791-2 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: T
Risk Phrases: 22 24 45

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Harmful if swallowed. Toxic in contact with skin. May cause cancer.

Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation.
Ingestion:
Causes gastrointestinal irritation with nausea, vomiting and
diarrhea.
Inhalation:
Causes respiratory tract irritation.
Chronic:
No information found.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid if irritation develops or persists. Discard
contaminated clothing in a manner which limits further exposure.
Flush skin with plenty of soap and water.
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.
Inhalation:
If not breathing, give artificial respiration. If breathing is
difficult, give oxygen. Get medical aid.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear.
Extinguishing Media:
In case of fire, use water, dry chemical, chemical foam, or
alcohol-resistant foam.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Use with adequate ventilation. Avoid contact with skin and eyes.
Avoid ingestion and inhalation.
Storage:
Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
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)
CAS# 1310-73-2:
United Kingdom, WEL - STEL: 2 mg/m3 STEL
United States OSHA: 2 mg/m3 TWA
Belgium - TWA: 2 mg/m3 VLE
France - VME: 2 mg/m3 VME
Germany: 2 mg/m3 TWA (inhalable fraction)
Japan: 2 mg/m3 Ceiling
Malaysia: 2 mg/m3 Ceiling
Spain: 2 mg/m3 VLA-EC
CAS# 7732-18-5:


Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate 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.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: clear, colorless
Odor: none reported
pH: 6.5
Vapor Pressure: Not available.
Viscosity: ~
Boiling Point: 212 deg F
Freezing/Melting Point: 32 deg F
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Completely soluble in water.
Specific Gravity/Density: 1.0
Molecular Formula: Mixture
Molecular Weight: 0

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
None reported.
Incompatibilities with Other Materials:
None reported.
Hazardous Decomposition Products:
None.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 637-03-6: CH8100000
CAS# 1310-73-2: WB4900000
CAS# 7732-18-5: ZC0110000
LD50/LC50:
Not available.
CAS# 1310-73-2: Draize test, rabbit, eye: 400 ug Mild; Draize test,
rabbit, eye: 1% Severe; Draize test, rabbit, eye: 50 ug/24H Severe;
Draize test, rabbit, eye: 1 mg/24H Severe; Draize test, rabbit,
skin: 500 mg/24H Severe.
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
Carcinogenicity:
Oxophenylarsine -
IARC: Group 1 carcinogen (listed as Arsenic compounds, n.o.s.).
Sodium hydroxide -
Not listed by ACGIH, IARC, or NTP.
Water -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

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

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
USA RQ: CAS# 1310-73-2: 1000 lb final RQ; 454 kg final RQ

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T
Risk Phrases:
R 45 May cause cancer.
R 22 Harmful if swallowed.
R 24 Toxic in contact with skin.
Safety Phrases:
S 53 Avoid exposure - obtain special instructions
before use.
S 28A After contact with skin, wash immediately with
plenty of water.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 637-03-6: No information available.
CAS# 1310-73-2: 1
CAS# 7732-18-5: No information available.
Canada
CAS# 637-03-6 is listed on Canada's DSL List.
CAS# 1310-73-2 is listed on Canada's DSL List.
CAS# 7732-18-5 is listed on Canada's DSL List.
CAS# 637-03-6 is not listed on Canada's Ingredient Disclosure List.
CAS# 1310-73-2 is listed on Canada's Ingredient Disclosure List.
CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 637-03-6 is listed on the TSCA inventory.
CAS# 1310-73-2 is listed on the TSCA inventory.
CAS# 7732-18-5 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
R 35 Causes severe burns.
MSDS Creation Date: 11/07/2001 Revision #2 Date: 2/05/2003

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information currently available to us. However, we make no warranty of
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such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
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