Product Name: 2-Methyl-1,1,1-trichloro-2-propanol hemihydrate
Synonyms: 2-Methyltrichloroisopropanol hemihydrate, 2-Methyl-1,1,1-trichloroacetone hydrate
CAS Number: 67694-93-5
Manufacturer: Details available on request from supplier
Contact Information: Emergency contact supplied by manufacturer or distributor
Recommended Use: Suitable for laboratory, industrial, and research applications
Restrictions on Use: Not approved for food, drug, or personal use
GHS Classification: Acute Toxicity (oral, inhalation, dermal), Skin Irritant, Eye Irritant, Specific Target Organ Toxicity
Hazard Statements: Harmful if swallowed, causes skin irritation, causes serious eye irritation, toxic if inhaled
Pictograms: Exclamation mark, health hazard
Precautionary Statements: Avoid breathing dust or vapors, wash hands after handling, use only outdoors or in well-ventilated area, wear protective gloves, clothing, eye and face protection
Signal Word: Warning
Chemical Name: 2-Methyl-1,1,1-trichloro-2-propanol hemihydrate
Concentration: ≥98% by weight (as supplied)
Impurities/Additives: Trace water due to hemihydrate formulation
Molecular Formula: C4H7Cl3O·0.5H2O
Molecular Weight: Approximately 200.49 g/mol
Inhalation: Remove person to fresh air, keep at rest, seek immediate medical attention if symptoms persist or breathing is difficult
Skin Contact: Remove contaminated clothing, wash exposed skin thoroughly with soap and water for at least 15 minutes, obtain medical help if irritation appears or persists
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, do not rub eyes, seek prompt medical attention
Ingestion: Rinse mouth, never give anything by mouth if unconscious, do not induce vomiting, call poison control or a physician right away
Most Important Symptoms: Irritation of respiratory tract, dizziness, skin and eye redness, gastrointestinal discomfort
Suitable Extinguishing Media: Use water spray, carbon dioxide, dry chemical, or foam
Unsuitable Extinguishing Media: Direct high-pressure water jets may spread contamination
Specific Hazards: Emits toxic fumes of hydrogen chloride, carbon monoxide, chlorine-containing compounds during combustion
Protective Equipment: Wear self-contained breathing apparatus and full protective gear
Advice for Firefighters: Stay upwind, avoid inhalation of combustion products, evacuate area if necessary
Personal Precautions: Evacuate unnecessary personnel, use personal protective equipment including respirator, gloves, and goggles
Environmental Precautions: Prevent contamination of soil and water, avoid runoff into tanks, drains, or sewers
Containment and Cleanup: Absorb spills with inert material such as sand or earth, transfer to suitable chemical waste containers, ventilate area, dispose of waste by approved methods
Decontamination: Clean surface with copious water and detergent, collect and dispose in accordance with environmental regulations
Safe Handling Practices: Handle in a chemical fume hood or well-ventilated area, avoid dust generation, minimize splashes and aerosol formation, do not eat, drink or smoke during use, wash hands thoroughly after use
Storage Conditions: Store in tightly closed original container, away from incompatible substances, in a cool, dry, well-ventilated environment, maintain temperature below 25°C, protect from direct sunlight and humidity
Incompatible Materials: Strong bases, oxidizers, acids, reducing agents
Special Storage Requirements: Segregate from reactive chemical storage areas, label shelves and containers clearly
Exposure Limits: No specific occupational exposure limit established
Engineering Controls: Work in local exhaust ventilated areas, use fume hoods, install eyewash stations and safety showers close to work area
Personal Protective Equipment: Chemically resistant gloves (nitrile, neoprene preferred), safety glasses with face shield, laboratory coat or apron, appropriate respiratory protection if airborne exposure risk exists
Hygiene: Remove contaminated clothing immediately, do not wear in eating areas, shower and change after work, do not touch face, nose, or mouth before washing
Appearance: White crystalline solid
Odor: Faint chemical odor, pleasant at low concentration, pungent at high levels
Melting Point/Freezing Point: 80–85°C
Boiling Point: Decomposes before boiling
Solubility: Slightly soluble in water, soluble in organic solvents (alcohols, acetone)
Density: 1.6 g/cm³ (approximate)
pH (solution): Weakly acidic
Vapor Pressure: Negligible at room temperature
Partition Coefficient (n-octanol/water): Log Kow not determined
Decomposition Temperature: >100°C with formation of toxic gases
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Reacts with strong acids and bases, may liberate toxic gases upon decomposition
Hazardous Reactions: May produce hydrochloric acid, phosgene, and other hazardous products if mixed with incompatible chemicals or exposed to heat
Conditions to Avoid: Excess moisture, high temperatures, strong sunlight, mixing with incompatible materials
Hazardous Decomposition Products: Hydrogen chloride, carbon monoxide, phosgene, chlorinated hydrocarbons
Routes of Exposure: Inhalation, ingestion, dermal, ocular
Acute Toxicity: Harmful by oral and inhalation routes, estimated oral LD50 (rat) 300–2000 mg/kg
Skin Effects: Causes redness, dryness, possible dermatitis
Eye Effects: Severe irritation, possible conjunctivitis
Chronic Effects: Prolonged exposure may cause adverse effects to liver, kidneys, and central nervous system based on data from structurally related compounds
Carcinogenicity: No data available, not classified as carcinogen by IARC/NTP/OSHA
Mutagenicity/Teratogenicity: Information not available, use caution due to chemical family
Sensitization: Not known to cause allergic reactions, may irritate sensitive individuals
Ecotoxicity: Suspected harmful to aquatic organisms, persistence possible in watercourses, may cause long-term adverse effects in the aquatic environment
Persistence and Degradability: Likely to degrade slowly under environmental conditions, not easily biodegradable
Bioaccumulation Potential: Limited potential, though similar chlorinated compounds can persist
Mobility in Soil: Low to moderate, possible leaching to groundwater in large spills
Other Adverse Effects: No known ozone depletion or bioaccumulative concerns, but prudent management needed to prevent soil and water contamination
Waste Treatment Methods: Dispose through a licensed chemical waste contractor
Product Disposal: Incineration recommended with appropriate flue gas scrubbing, landfill only as last option if permitted by local laws
Contaminated Packaging: Rinse thoroughly, label as hazardous, dispose according to local regulations
Precautions for Disposal: Avoid release into environment, do not reuse empty containers, keep waste separate from municipal refuse
UN Number: 2810
Proper Shipping Name: Toxic liquid, organic, n.o.s. (contains 2-Methyl-1,1,1-trichloro-2-propanol hemihydrate)
Transport Hazard Class: 6.1 (Toxic Substances)
Packing Group: III
Marine Pollutant: No data, but prevent transit spills near waterways
Special Precautions: Secure containers, use approved packaging for toxic chemicals, ensure transport documentation complies with all relevant regulations
TSCA Status: Listed or subject to reporting under TSCA regulations
REACH Status: Registration or evaluation may apply in Europe, consult European Chemicals Agency for current status
SARA Title III: Not specifically listed under Section 313, but subject to reporting as a hazardous chemical
WHMIS Classification: D2A (very toxic material causing other toxic effects), D2B (toxic material causing other effects)
California Proposition 65: Not listed; check annually for updates
Other Local/International Regulatory Listings: Compliance with chemical safety legislation required in user jurisdiction, users advised to check country or state-specific listings before handling
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