MSDS Name:   Cacodylic acid
Synonym:   Dimethylarsinic Acid; Hydroxydimethylarsine Oxide.
Company:   AboutChem.com

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

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 75-60-5 |Cacodylic acid | 100 | 200-883-4 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T N
Risk Phrases: 23/25 50/53

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

EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Very toxic to aquatic
organisms, may cause long-term adverse effects in the aquatic
environment.Cancer suspect agent.Hygroscopic (absorbs moisture from
the air).

Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation. May be absorbed through the skin in
harmful amounts. 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:
Poison by ingestion. May cause gastrointestinal irritation with
nausea, vomiting and diarrhea. 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. 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 cancer according to animal studies. Adverse reproductive
effects have been reported in animals. Chronic exposure to arsenical
dust may cause shortness of breath, nausea, chest pains, and garlic
odor.

**** 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:
Flush skin with plenty of water for at least 15 minutes while
removing contaminated clothing and shoes. Get medical aid if
irritation develops or persists. Wash clothing before reuse.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Get medical aid.
Inhalation:
Remove from exposure and move to fresh air immediately. Get medical
aid if cough or other symptoms appear. Do NOT use mouth-to-mouth
resuscitation. If breathing has ceased apply artificial respiration
using oxygen and a suitable mechanical device such as a bag and a
mask.
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. Use water
spray to keep fire-exposed containers cool. Use extinguishing media
appropriate to the surrounding fire. Substance is noncombustible.
Containers may explode when heated. Runoff from fire control or
dilution water may cause pollution.
Extinguishing Media:
Do NOT get water inside containers. Do NOT use straight streams of
water. For small fires, use dry chemical, carbon dioxide, or water
spray. Cool containers with flooding quantities of water until well
after fire is out. For large fires, use water spray, fog or regular
foam. For large fires, flood fire area with water from a distance.

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

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Avoid runoff into storm sewers and ditches which lead to
waterways. Clean up spills immediately, observing precautions in the
Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.

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

Handling:
Wash thoroughly after handling. Use only in a well-ventilated area.
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# 75-60-5:
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:
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: Crystalline powder
Color: colorless or white
Odor: stench
pH: Acidic.
Vapor Pressure: Not applicable.
Viscosity: Not applicable.
Boiling Point: 392 deg F
Freezing/Melting Point: 378 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: 83% @ 20C
Specific Gravity/Density: >1.1
Molecular Formula: C2H7AsO2
Molecular Weight: 138.01

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

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
Incompatible materials, dust generation, moisture, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents and strong bases.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon
dioxide, oxides of arsenic.
Hazardous Polymerization: Has not been reported.

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

RTECS#:
CAS# 75-60-5: CH7525000
LD50/LC50:
CAS# 75-60-5: Oral, mouse: LD50 = 1200 mg/kg; Oral, rat: LD50 = 644
mg/kg.
Carcinogenicity:
Cacodylic acid -
California: carcinogen, initial date 5/1/96
IARC: Group 1 carcinogen (listed as Arsenic).
Other:
See actual entry in RTECS for complete information.

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

Other
For more information, see "HANDBOOK OF ENVIRONMENTAL FATE AND
EXPOSURE DATA."

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

Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.

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

IATA
Shipping Name: CACODYLIC ACID
Hazard Class: 6.1
UN Number: 1572
Packing Group: II
IMO
Shipping Name: CACODYLIC ACID
Hazard Class: 6.1
UN Number: 1572
Packing Group: II
RID/ADR
Shipping Name: CACODYLIC ACID
Hazard Class: 6.1
UN Number: 1572
Packing group: II
USA RQ: CAS# 75-60-5: 1 lb final RQ; 0.454 kg final RQ

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

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# 75-60-5: 3
Canada
CAS# 75-60-5 is listed on Canada's NDSL List.
CAS# 75-60-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 75-60-5 is listed on the TSCA inventory.

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

MSDS Creation Date: 7/14/1999 Revision #4 Date: 1/03/2003

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.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------