Product Name: Methyl Propanediol
Synonyms: 2-Methyl-1,3-propanediol, Methyl-1,3-propanediol
CAS Number: 2163-42-0
Relevant Identified Uses: Industrial manufacturing, intermediate for polymers, solvents, personal care product ingredient
Supplier Details: Manufacturer and emergency contact number should be provided by the distributor's label or shipping documents
Emergency Phone Numbers: Refer to site-specific protocol or local poison control resources as required
GHS Classification: Not classified as hazardous according to OSHA Hazard Communication Standard (29 CFR 1910.1200)
Signal Word: None
Hazard Statements: Prolonged skin or eye contact may cause mild irritation; inhalation of vapors in poorly ventilated spaces can cause respiratory discomfort
Pictograms: Not required under GHS for this material
Precautionary Statements: Avoid prolonged or repeated contact, avoid inhaling high concentrations of vapor or mist, wash thoroughly after handling, use ventilation when working with heated product
Chemical Identity: 2-Methyl-1,3-propanediol
CAS Number: 2163-42-0
Concentration: >99% by weight
Impurities: Water (<0.5%), other glycols (trace amounts)
Inhalation: Move person to fresh air, provide oxygen or artificial respiration if breathing is difficult, seek medical attention if symptoms persist
Skin Contact: Remove contaminated clothing and shoes, wash skin thoroughly with soap and water, get medical help if irritation develops or persists
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, lift upper and lower eyelids, remove contact lenses if easy to do, get medical attention for continued discomfort
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical care for large ingestion or unusual symptoms
Suitable Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide as appropriate for surrounding materials
Specific Hazards: Combustion may release carbon monoxide, carbon dioxide, irritating fumes; risk increases with heated product
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective gear
Advice for Firefighters: Prevent runoff from entering drains, water sources, or soil; use water spray to cool exposed surfaces; avoid inhalation of combustion products
Personal Precautions: Use appropriate personal protection such as gloves, safety goggles, and protective clothing; ensure adequate ventilation in spill area
Environmental Precautions: Prevent liquid from entering sewers, water sources, or soil; notify local authorities if large spills reach waterways
Methods for Cleanup: Contain spill with sand, earth, or inert absorbent, scoop up and transfer to labelled waste containers for disposal according to regulations, clean area with soap and water to remove residue
Precautions for Handling: Handle with care to avoid spills, use only in well-ventilated areas or with proper local exhaust, wear recommended personal protective equipment, avoid breathing vapors in heated conditions
Requirements for Storage: Store in tightly closed containers in a cool, dry, well-ventilated area away from sources of ignition, strong oxidizers, and moisture; keep containers upright and protected from physical damage; segregate from foodstuffs and incompatible materials
Storage Temperature: Recommended storage at ambient temperatures, keep away from direct sunlight and heat sources
Occupational Exposure Limits: No established OSHA or ACGIH exposure limits
Engineering Controls: Use local exhaust ventilation in area of vapor generation or high temperature processing
Personal Protective Equipment: Safety goggles or face shield, chemical-resistant gloves (such as nitrile), lab coat or apron, suitable footwear
Respiratory Protection: Not usually required in well-ventilated spaces, use NIOSH-approved respirator if mist or vapor concentrations exceed comfort threshold
Hygiene Measures: Wash hands before eating, drinking, or smoking; do not bring contaminated clothing or gloves outside the work area
Appearance: Colorless liquid
Odor: Mild, characteristic glycol odor
Odor threshold: Not determined
pH: Approximately neutral (6–8 for 10% aqueous solution)
Melting Point / Freezing Point: -54°C (-65°F)
Boiling Point / Range: 212°C (414°F)
Flash Point: 126°C (open cup)
Evaporation Rate: Not determined
Flammability (solid, gas): Not applicable (liquid)
Explosive Limits: Not established
Vapor Pressure: <0.1 mmHg at 20°C
Vapor Density: Not established
Relative Density: Approximately 1.02 g/cm³ at 20°C
Solubility: Miscible with water, alcohols, and many organic solvents
Partition Coefficient (n-octanol/water): Log Kow = -0.92
Auto-ignition Temperature: >300°C (572°F)
Decomposition Temperature: Not established
Viscosity: 48 mPa·s at 20°C
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Excessive heat, flames, sparks, incompatible materials
Incompatible Materials: Strong acids, strong oxidizing agents, strong bases
Hazardous Decomposition Products: Thermal decomposition can release carbon monoxide, carbon dioxide, unidentified organic compounds
Reactivity: Not reactive under normal processing and storage conditions
Routes of Exposure: Skin contact, eye contact, inhalation, ingestion
Acute Toxicity: Low toxicity by oral, dermal, or inhalation routes (LD50 oral rat >5000 mg/kg)
Irritation: Slight skin and eye irritation may occur with direct contact
Skin Sensitization: No evidence of sensitization in animal studies or human occupational exposure
Chronic Effects: Not classified as carcinogenic, mutagenic, or reprotoxic by IARC, NTP, OSHA, or EU agencies
Symptoms: Mild temporary eye or skin irritation with splashes, respiratory tract discomfort if inhaled as mist; ingestion of very large amounts may cause gastrointestinal upset
Aquatic Toxicity: Low aquatic toxicity based on available data, LC50 (fish, 96 hr) > 100 mg/L
Persistence and Degradability: Readily biodegradable under aerobic conditions
Bioaccumulative Potential: Low, log Kow value indicates little tendency to bioaccumulate
Mobility in Soil: High water solubility promotes mobility, not expected to adsorb strongly to soil
Other Adverse Effects: Product does not contain known substances which deplete ozone or contribute significantly to greenhouse gases
Waste Treatment: Collect and dispose of in compliance with local, state, national regulations for chemical waste
Container Disposal: Triple rinse containers before recycling or disposal, follow procedures for hazardous or non-hazardous materials as advised by regulatory bodies
Special Precautions: Avoid uncontrolled discharge into the environment, consult with licensed waste disposal companies for large quantities or complex mixtures
Recommended Disposal Methods: Recycle or incinerate in accordance with all federal, state, and local environmental control regulations; do not flush undiluted product to sewer
UN Number: Not regulated for transport by land, air, or sea (non-hazardous for most modes)
Proper Shipping Name: Not regulated
Transport Hazard Class: Not classified
Packing Group: Not applicable
Marine Pollutant: Not designated as a marine pollutant
Special Precautions for Transport: Protect containers from physical damage, excessive heat, and freezing; secure loads to prevent shifting or spillage during movement
TSCA Inventory: Listed on US Toxic Substances Control Act (TSCA) Inventory
ECHA / REACH: Registered as required for European use
DSL (Canada): Included in Domestic Substances List
WHMIS Classification: Not controlled product under Canadian WHMIS
SARA Title III: Not listed as an extremely hazardous substance or subject to reporting under Sections 302, 304, 313
Other Local, State, Federal Regulations: Refer to individual jurisdictional requirements for worker protection, labeling, and environmental impact; not included on carcinogen or reproductive toxin lists from US NTP, IARC, California Prop 65, or EU directives
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