Product Name: 3-Mercapto-1,2-Propanediol
Synonyms: Thioglycerol; Glycerol, mercapto-
CAS Number: 96-27-5
Recommended Use: Laboratory chemical, chemical synthesis, research applications
Manufacturer: Supplier information referenced on the package label
Emergency Contact: Refer to national emergency number and Poison Control Center
Classification: Acute Toxicity (oral, dermal, inhalation); Skin Corrosion/Irritation; Eye Damage/Irritation
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin and serious eye irritation, may cause respiratory irritation, toxic to aquatic life with long-lasting effects
Pictograms: Exclamation mark, Corrosion, Environment
Precautionary Statements: Avoid contact with skin and eyes; use only outdoors or in well-ventilated area; avoid release to environment
Chemical Name: 3-Mercapto-1,2-Propanediol
Formula: C3H8O2S
Concentration: 98-100%
Impurities: Trace water, residual solvents typically less than 1%
Molecular Weight: 108.16 g/mol
Inhalation: Move person to fresh air, support breathing as needed, call a physician with any persistently troubling symptoms
Skin Contact: Remove contaminated clothing, rinse skin with soap and water, seek medical attention for ongoing irritation or rash
Eye Contact: Rinse eyes gently with water for 15 minutes, hold eyelids open, obtain medical attention if discomfort continues
Ingestion: Rinse mouth, never induce vomiting unless directed by medical personnel, get medical help if feeling unwell
Symptoms/Effects: May cause headache, nausea, burns or irritation to skin and eyes, coughing, dizziness
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam, water spray in mist
Specific Hazards: Product releases toxic fumes of sulfur oxides and carbon compounds in fire
Protective Equipment: Wear full protective gear and self-contained breathing apparatus
Special Procedures: Move non-involved personnel away, prevent runoff into drains or waterways
Personal Precautions: Ensure adequate ventilation, wear protective gloves and safety glasses, avoid inhaling vapors
Environmental Precautions: Prevent from entering sewers, drains, surface, and ground water
Containment: Absorb with inert material like sand or vermiculite
Cleanup: Collect up in suitable containers for disposal per local regulations, ventilate the area, wipe spill residues with damp cloth or paper
Handling: Work in well-ventilated locations, avoid skin and eye contact, avoid inhalation of vapors or mists, never eat or drink around chemicals
Storage: Store in tightly closed containers away from strong acids, oxidizers, and moisture, keep in cool, dry, well-ventilated areas, avoid direct sunlight, segregate from incompatible materials, label storage appropriately with chemical hazards
Engineering Controls: Use fume hoods or local exhaust to minimize inhalation, keep eyewash stations and safety showers accessible
Personal Protection: Wear chemical-resistant gloves (nitrile or neoprene), splash-proof goggles, lab coat, and in case of risk, use approved respirator
Hygiene Measures: Wash hands before breaks and after handling, remove and wash contaminated clothing before reuse
Appearance: Colorless to pale yellow viscous liquid
Odor: Strong unpleasant (sulfurous) odor
Odor Threshold: Sharp, detectable at low concentrations
pH: Not determined
Melting Point/Freezing Point: Around 35°C
Boiling Point: Around 180–190°C at 760 mmHg
Flash Point: Above 100°C (closed cup), confirms moderate flammability risk
Evaporation Rate: Not determined
Flammability (solid/gas): Not flammable as a liquid but vapors may form explosive mixtures with air
Vapor Pressure: Low at room temperature
Solubility: Miscible in water, soluble in alcohol and ether
Partition Coefficient (n-octanol/water): Not available
Decomposition Temperature: Above 200°C, decomposes to sulfur and carbon oxides
Viscosity: Moderate
Chemical Stability: Stable under ordinary temperature and pressure
Reactivity: Reacts with strong oxidizers such as peroxides and nitric acid, reacts with acylating agents
Possibility of Hazardous Reactions: Vapor and air can form explosive mixtures, exposure to high temperatures may cause exothermic decomposition
Conditions to Avoid: Heat, sparks, open flame, moisture, strong oxidizing conditions
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, sulfur oxides, possibly toxic fumes
Acute Toxicity: Harmful if swallowed or inhaled, causes moderate to severe skin irritation, strong risk of eye damage
Skin Corrosion/Irritation: Contact causes immediate redness, pain, may cause blisters with prolonged exposure
Serious Eye Damage/Irritation: Can cause severe irritation and potential corneal injury
Respiratory Irritation: Vapors cause coughing, throat and nasal irritation
Sensitization: Possible allergic reactions on repeated or prolonged exposures
Chronic Toxicity: Prolonged exposure may affect kidney or liver function, reports indicate potential nervous system effects
Mutagenicity/Carcinogenicity: Long-term animal studies lacking, no official classification as a carcinogen from IARC, NTP, or OSHA
Other Effects: Unpleasant odor can cause nausea or headache at low doses, so good ventilation is very important
Aquatic Toxicity: Very toxic to aquatic life, low concentrations can have considerable effects on fish and invertebrates
Environmental Fate: Degrades slowly in soil and water, can persist and accumulate in sediment
Bioaccumulative Potential: Not enough data to assess but do not release undiluted to the environment
Mobility in Soil: Moderate mobility, risk for groundwater if spilled or involved in runoff
Other Adverse Effects: Toxic breakdown products, avoid release to surface water, sewer, or soil
Waste Treatment Methods: Dispose of as hazardous waste in accordance with local, regional and national regulations
Contaminated Packaging: Rinse thoroughly before disposal or recycling, follow chemical waste container guidelines
Other: Never dump down drains or sewers, contact a licensed universal waste handler or chemical disposal company for pickup, incineration recommended for complete destruction
UN Number: 2810
Proper Shipping Name: Toxic Liquid, Organic NOS (contains 3-Mercapto-1,2-Propanediol)
Transport Hazard Class: 6.1 (Toxic substances)
Packing Group: III
Environmental Hazards: Marine pollutant
Special Precautions: Secure upright during transport, label clearly with hazardous identification, handle only by trained personnel
Safety, Health and Environmental Regulations: Listed in TSCA (US), EINECS (EU), DSL (Canada), PICCS (Philippines), and other international chemical inventories
OSHA: Classified hazardous
WHMIS (Canada): Identified as hazardous material
Labeling Requirements: GHS pictograms, hazard and precautionary statements required
Restrictions: Use by trained professionals only, not for general public, comply with all workplace chemical safety laws
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