Section 1: Product Identification
Chemical Name: Methylmercury (II) hydroxide,approx. 1M aqueous solution
CAS Registry Number: 1184-57-2
Formula: CH3HgOH
EINECS Number: 214-667-2
Chemical Family: organomercury compound
Synonym: Methylmercury hydroxide
Section 2: Composition and Information on Ingredients
Ingredient CAS Number Percent ACGIH (TWA) OSHA (PEL)
Title Compound 1184-57-2 23% 0.01mg/m3 0.01mg/m3
water 7732-18-5 77% no data no data
Section 3: Hazards Identification
Mercury salts are poisonous by ingestion and inhalation of dust. Possible risk of harm to the unborn child.
Emergency Overview:
Prolonged exposure may cause heritable genetic damage and impaired fertility.
Primary Routes of Exposure: Ingestion, Skin.
Eye Contact: May cause mild to severe irritation of the eyes. May deposit mercury in the lens of the eye.
Skin Contact: May cause mild to severe irritation of the skin. Toxic in contact with skin.
May be toxic by inhalation. May cause severe respiratory and gastrointestinal distress. May damage the
Inhalation:
central nervous system.
Very toxic if swallowed. Lack of appetite, abdominal cramps, vomiting, kidney failure, paralysis. Mercury binds
Ingestion:
to thiol groups of protein.
Poison. stomach upset and pain, mouth pain, vomiting, excessive salivation, urine products appear in the
Acute Health Affects:
blood.
The chronic effects of mercury poisoning include stomatitis, tremors, psychic disturbances, excessive
Chronic Health Affects:
salivation, dermatitis, and pain on chewing. May cause heritable genetic damage and impair fertility.
NTP: No
IARC: Yes
OSHA: No
SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area with water. Remove contaminated clothes if necessary. Seek medical assistance if
Skin Exposure:
irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.
SECTION 5: Fire Fighting Measures
Flash Point: no data
Autoignition Temperature: none
Explosion Limits: none
Extinguishing Medium: carbon dioxide, foam or dry powder
If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
Special Fire Fighting Procedures:
self- contained breathing apparatus and full protective clothing.
Hazardous Combustion and If involved in a fire this material may emit toxic fumes containing mercury.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.
SECTION 6: Accidental Release Measures
Small spills can be mixed with vermiculite, sodium carbonate or other suitable non combustible adsorbent and
Spill and Leak Procedures:
swept up.
SECTION 7: Handling and Storage
Handling and Storage: Store in a cool, dry place in a tightly sealed container.
SECTION 8: Exposure Controls and Personal Protection
Eye Protection: Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection: Wear protective clothing and gloves.
Ventilation: If possible, handle the material in an efficient fume hood.
If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator
Respirator:
Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation: If possible, handle the material in an efficient fume hood.
Additional Protection: No additional protection required.
SECTION 9: Physical and Chemical Properties
Color and Form: colorless liq.
Molecular Weight: 232.63
Melting Point: no data
Boiling Point: no data
Vapor Pressure: no data
Specific Gravity: no data
Odor: none
Solubility in Water: material is a water solution
SECTION 10: Stability and Reactivity
Stability: air and moisture stable
Hazardous Polymerization: no hazardous polymerization
Conditions to Avoid: none
Incompatibility: azides, fulminates, active metals, reducing agents, and strong oxidizing agents.
Decomposition Products: carbon monoxide, carbon dioxide, mercury fumes, and organic fumes.
SECTION 11: Toxicological Information
Oral (rat); LD50: 43300 ug/kg. Intraperitoneal (mouse); LD50: 20 mg/kg. Oral (monkey); LD: >3 mg/kg. Oral
(rat); TDLo: 315 mg/kg/30W-C. Subcutaneous (rat); TDLo: 70 mg/kg/7D-I. Oral (monkey); TDLo: 26320
RTECS Data: mg/kg/43W-I. Oral (rat); TDLo: 50 mg/kg. Subcutaneous (rat); TDLo:100 mg/kg. Human HeLa cell; DNA
inhibition: 10 umol/L. Human HeLa cell; Mutation test not-not otherwise specified: 7500 nmol/L. Intraperitoneal
(mouse); DNA inhibition: 1 mg/kg.
Carcinogenic Effects: No data
Mutagenic Effects: Mutagen
Tetratogenic Effects: Reproductive effector
SECTION 12: Ecological Information
Avoid release to groundwater or waterways. Very toxic to aquatic organisms. May cause long-term adverse
Ecological Information:
effects.
SECTION 13: Disposal Considerations
Disposal: Dispose of according to local, state and federal regulations.
SECTION 14: Transportation
Shipping Name (CFR): Mercury compounds, liquid, N.O.S.
Hazard Class (CFR): 6.1
Additional Hazard Class (CFR): NA
Packaging Group (CFR): II
UN ID Number (CFR): UN# 2024
Shipping Name (IATA): Mercury compound, liquid, N.O.S.
Hazard Class (IATA): 6.1
Additional Hazard Class (IATA): NA
Packaging Group (IATA): II
UN ID Number (IATA): UN# 2024
SECTION 15: Regulatory Information
TSCA: Not listed in the TSCA inventory.
SARA (Title 313): Title compound: See category N458 for reporting.
Second Ingredient: None
SECTION 16 - ADDITIONAL INFORMATION
N/A
