Methanol Safety Data Sheet

3.1 Substances

3.2 Mixtures

4.1 Description of Necessary First-Aid Measures

4.2 Most Important Symptoms/Effects, Acute and Delayed

The most important known symptoms and effects include: Highly Flammable liquid and vapor; Toxic if swallowed; Toxic in contact with skin; Toxic if inhaled; Causes damage to organs.

4.3 Indication of Immediate Medical Attention and Special Treatment Needed

Treat symptomatically and supportively. Monitor vital signs and respiratory functions. No specific antidote known.

6.1 Personal Precautions, Protective Equipment and Emergency Procedures

For Non-Emergency Personnel: Evacuate personnel to safe areas upwind. Eliminate all ignition sources (no smoking, flares, sparks, or flames). Ensure adequate ventilation. Do not breathe vapors, mist, or dust. Avoid contact with skin, eyes, and clothing. Wear appropriate personal protective equipment (see Section 8).

For Emergency Responders: Wear positive-pressure self-contained breathing apparatus (SCBA) and chemical-resistant, antistatic protective clothing. Use clean, non-sparking, explosion-proof tools. Ground and bond all handling equipment.

6.2 Environmental Precautions

Prevent further leakage or spillage if safe to do so. Prevent spilled material from entering drains, sewers, waterways, and soil. Inform environmental authorities if spillage causes environmental contamination.

6.3 Methods and Materials for Containment and Cleaning Up

Small Spill Clean-up: Absorb spillage with sand or other non-combustible material. Use clean, non-sparking tools to collect absorbed material into compatible containers. Seal containers and move out of spill area. Ensure static grounding and bonding during transfer, with nitrogen blanketing if required.

Large Spill Clean-up: Construct dikes or dig trenches for containment. Seal drainage pipelines. Cover with alcohol-resistant foam (for water-immiscible flammable liquids) / sand / non-combustible material to suppress vapor evaporation. Transfer using explosion-proof pump (or corrosion-resistant pump if corrosive) to tank truck or designated collector. Ensure static grounding and bonding during transfer, with nitrogen blanketing if required.

Prevention of Secondary Hazards: Prevent aerosol formation in air;

7.1 Precautions for Safe Handling

Use only in well-ventilated areas. Keep away from heat, hot surfaces, sparks, open flames, and other ignition sources. No smoking. Use explosion-proof ventilation system and equipment. Use non-sparking tools. Take precautionary measures against static discharge. Ground/bond container and receiving equipment. Avoid contact with skin, eyes, and clothing. Avoid breathing vapors, mist, or dust.

Hygiene Measures: Prohibit eating, drinking, and smoking in work and storage areas. Wash hands thoroughly with soap and water after handling and before breaks. Remove contaminated clothing and protective equipment before entering eating areas.

7.2 Conditions for Safe Storage, including Any Incompatibilities

Store in original tightly closed container in a cool, dry, and well-ventilated area away from direct sunlight, heat, sparks, open flames, and incompatible materials. Storage facilities must be equipped with explosion-proof electrical systems, static grounding, and lightning protection. Use explosion-proof lighting, ventilation systems, and electrical equipment.

Incompatible Materials: Strong oxidizing agents.

Packaging Recommendations: Keep only in original manufacturer-approved container. Ensure container material is compatible with the substance and certified for dangerous goods transport (UN-approved packaging). Keep container tightly closed.

8.1 Control Parameters (Occupational Exposure Limit Values)

Biological Limit Values: ACGIH Biological Exposure Indices (BEIs):
• Methanol in urine: 15 mg/L (Sampling Time: End of shift, Notation: B, Ns)

8.2 Appropriate Engineering Controls

Provide adequate explosion-proof local exhaust ventilation and general ventilation to maintain airborne concentrations below occupational exposure limits. Ventilation systems must be grounded and bonded against static electricity. Emergency eyewash fountains and safety showers must be readily accessible in the immediate work area.

8.3 Individual Protection Measures (Personal Protective Equipment - PPE)

9.1 Basic Physical and Chemical Properties

9.2 Other Information

10.1 Reactivity: Vapors may form explosive mixtures with air. Reacts vigorously with strong oxidizing agents.

10.2 Chemical Stability: Stable under recommended storage and handling conditions.

10.3 Possibility of Hazardous Reactions: Hazardous polymerization will not occur. Exothermic or hazardous reactions possible with incompatible materials.

10.4 Conditions to Avoid: Heat, flames, sparks, hot surfaces, static discharge, direct sunlight, and incompatible materials.

10.5 Incompatible Materials: Strong oxidizing agents.

10.6 Hazardous Decomposition Products: Carbon oxides (CO, CO2).

11.1 Information on Hazard Classes / Toxicological Effects

11.2 Information on Other Hazards

Endocrine Disrupting Properties: No specific data available regarding endocrine disrupting properties for human health.

11.3 Symptoms Related to Characteristics

The most important known symptoms and effects include: Highly Flammable liquid and vapor; Toxic if swallowed; Toxic in contact with skin; Toxic if inhaled; Causes damage to organs.

11.4 Delayed and Immediate Effects from Short and Long-Term Exposure

Immediate and delayed effects after short and long-term exposure are consistent with GHS hazard classifications (see Section 2).

11.5 Interactive Effects

No interactive effects data available.

12.1 Toxicity (Aquatic and Terrestrial): EC50; Species: Chlorella fusca ssp. vacuolata (Green Algae) strain 21115; Conditions: freshwater, static, 28 °C, pH 6.9; Concentration: 0.77 umol/L for 24 hr; Effect: decreased population growth rate /100% purity/

12.2 Persistence and Degradability: AEROBIC: The half-life for methanol applied to a sandy loam from Mississippi (68% sand, 23.4% silt, 8.6% clay, 0.94% organic carbon, pH 4.8) was 3.2 days. The half-life of methanol applied to a sandy silt loam from Texas (61.5% sand, 31.1% silt, 7.4% clay, 3.28% organic carbon, pH 7.8) was 1 day. The moisture content of each soil was maintained at approximately 80% of its field capacity over the 64 day incubation period, and the half-lives did not account for any potential volatilization loss(1).

12.3 Bioaccumulative Potential: Measured BCF values of less than 10 were reported for fish (golden ide (Leuciscus idus melanotus)) exposed to 0.05 mg/L of methanol for three days in an aquatic tank(1). According to a classification scheme(2), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).

12.4 Mobility in Soil: The measured Koc for methanol is reported to be 2.75(1). According to a classification scheme(2), this estimated Koc value suggests that methanol is expected to have very high mobility in soil(SRC).

12.5 Results of PBT and vPvB Assessment: No specific PBT or vPvB assessment data available.

12.6 Endocrine Disrupting Properties: No specific data available regarding endocrine disrupting properties in the environment.

12.7 Other Adverse Effects: No other adverse environmental effects (such as ozone depletion potential or global warming potential) are known from available data.

13.1 Disposal Methods

Waste Treatment and Residues: Avoid or minimize waste generation. Incinerate in an approved, licensed chemical incinerator equipped with an afterburner and scrubber. Dispose of surplus and non-recyclable solutions via a licensed waste disposal contractor in compliance with national and regional environmental laws. Do NOT dispose of waste into sewers or waterways.

Contaminated Packaging: Empty containers retain product residue. Do NOT cut, puncture, or weld empty containers. Dispose of as hazardous waste or return to supplier in accordance with environmental regulations.

Disposal Precautions: Wear appropriate PPE (see Section 8). Controlled high-temperature incineration is recommended.

15.1 Safety, Health and Environmental Regulations Specific for the Product in Question

15.2 Chemical Safety Assessment

No site-specific or registration-dossier Chemical Safety Assessment (CSA) / Chemical Safety Report (CSR) has been carried out for this substance by the SDS compiler. The hazard and safety classifications presented in this SDS are derived from publicly available regulatory assessment records (Authoritative Data Source(s): ILO-WHO International Chemical Safety Cards (ICSCs); EPA Chemical Data Reporting (CDR); European Chemicals Agency (ECHA); Hazardous Chemical Information System (HCIS), Safe Work Australia; NITE-CMC; Regulation (EC) No 1272/2008 of the European Parliament and of the Council). In accordance with UN GHS Rev. 11 (ST/SG/AC.10/30/Rev.11, Annex 4, Section A4.3.15), users should verify and comply with applicable national or regional chemical safety assessment obligations prior to use.