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MSDS 
:
 P-Arsanilic Acid, 99% (UV-Vis)
CAS 
:
 98-50-0
SYNONYMS 
:
 4-Aminobenzenearsonic Acid.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 98-50-0 |P-Arsanilic Acid | 99 | 202-674-3 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T
Risk Phrases: 23/25

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

EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed.Cancer suspect agent.

Potential Health Effects
Eye:
May cause eye irritation. May cause chemical conjunctivitis and
corneal damage.
Skin:
May cause skin irritation. Exposure to arsenic compounds may produce
hyperpigmentation of the skin and hyperkeratoses of plantar and
palmar surfaces as well as both primary irritation and sensitization
types.
Ingestion:
May cause irritation of the digestive tract. The toxicological
properties of this substance have not been fully investigated.
Ingestion of arsenical compounds may cause burning of the lips,
throat constriction, swallowing difficulties, severe abdominal pain,
severe nausea, projectile vomiting, and profuse diarrhea. Ingestion
of arsenic compounds can produce convulsions, coma, and possibly
death within 24 hours.
Inhalation:
May cause respiratory tract irritation. The toxicological properties
of this substance have not been fully investigated. Inhalation of
arsenic compounds may lead to irritation of the respiratory tract and
to possible nasal perforation. Long-term exposure to arsenic
compounds may produce impairment of peripheral circulation.
Chronic:
May cause liver and kidney damage. Chronic exposure to arsenical
dust may cause shortness of breath, nausea, chest pains, and garlic
odor. Cancer suspect agent.

**** 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. Flush skin with plenty of water for at least 15
minutes while removing contaminated clothing and shoes. Wash clothing
before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical
aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and
drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid. Do NOT use mouth-to-mouth
resuscitation.
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. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Use water spray, dry
chemical, carbon dioxide, or appropriate foam.

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

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Clean up spills immediately, observing precautions in the Protective
Equipment section. Sweep up, then place into a suitable container for
disposal. Avoid generating dusty conditions. Provide ventilation.

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

Handling:
Wash thoroughly after handling. Wash hands before eating. Remove
contaminated clothing and wash before reuse. Use with adequate
ventilation. Minimize dust generation and accumulation. Avoid
contact with eyes, skin, and clothing. Keep container tightly
closed. 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:
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# 98-50-0:
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)
United States OSHA: 0.5 mg/m3 TWA (listed under Arsenic).
Belgium - TWA: (listed as arsenic): 0.01 mg/m3 VLE
Japan: (listed as arsenic compounds, n.o.s.): 3 ??g/m3 OEL (refere
value, as As)
Malaysia: (listed as arsenic): 0.01 mg/m3 TWA
Netherlands: (listed as arsenic): 0.050 mg/m3 MAC
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 OSHA's 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:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

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

Physical State: Powder
Color: off-white powder
Odor: none reported
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 232 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: slightly soluble in cold water
Specific Gravity/Density: 1.9571
Molecular Formula: C6H8AsNO3
Molecular Weight: 217.06

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

Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat, strong
oxidants.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and
gases, carbon dioxide, nitrogen, oxides of arsenic.
Hazardous Polymerization: Has not been reported.

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

RTECS#:
CAS# 98-50-0: CF7875000
LD50/LC50:
CAS# 98-50-0: Oral, rat: LD50 = >1 gm/kg.
Carcinogenicity:
P-Arsanilic Acid -
IARC: Group 1 carcinogen (listed as Arsenic).
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
Shipping Name: ORGANOARSENIC COMPOUND, N.O.S.*
Hazard Class: 6.1
UN Number: 3280
Packing Group: III
IMO
Shipping Name: ORGANOARSENIC COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3280
Packing Group: III
RID/ADR
Shipping Name: ORGANOARSENIC COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3280
Packing group: III

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

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
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 37 Wear suitable gloves.
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# 98-50-0: 2
Canada
CAS# 98-50-0 is listed on Canada's NDSL List.
CAS# 98-50-0 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 98-50-0 is listed on the TSCA inventory.

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

MSDS Creation Date: 8/24/1997 Revision #4 Date: 3/18/2003

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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