Safety data sheet for Methanol
CAS 67-56-1
This is the free preview of a draft SDS for Methanol — Sections 1, 2 and 9, generated from the sources named below. The full 16-section draft, with your own company in Section 1, is $5 per document.
Typically documented by: Fuel additive, industrial solvent, lab reagent.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 67-56-1
- Molecular formula
- CH4O
- Molecular weight
- 32.042 g/mol
- Signal word
- Danger
Hazard classification
- GHS02 — Flammable
- GHS06 — Acute toxicity
- GHS08 — Serious health hazard
- H225: Highly flammable liquid and vapor.
- H301: Toxic if swallowed.
- H311: Toxic in contact with skin.
- H331: Toxic if inhaled.
- H370: Causes damage to organs.
Section 1 — Identification
1.1 Product identifier
Product identifier: Methanol
Chemical name (IUPAC): methanol
CAS number: 67-56-1
PubChem CID reference: 887
Synonyms: methanol; methyl alcohol; wood alcohol; Methylol; Wood naphtha; Methyl hydroxide; Monohydroxymethane; Methylalkohol; Alcool methylique; Methyl hydrate
Section 2 — Hazards Identification
2.1 Classification of the substance or mixture
Classification basis: OSHA 29 CFR 1910.1200 Appendix A, aligned to the GHS Rev. 7 hazard classes this sheet resolves: Flam. Liq. 2, Acute Tox. 3 (Oral), Acute Tox. 3 (Dermal), Acute Tox. 3 (Inhalation), STOT SE 1.
Classification: Flammable Liquid, Category 2 (Flam. Liq. 2) [H225]
Classification: Acute Toxicity, Category 3 — Oral (Acute Tox. 3 (Oral)) [H301]
Classification: Acute Toxicity, Category 3 — Dermal (Acute Tox. 3 (Dermal)) [H311]
Classification: Acute Toxicity, Category 3 — Inhalation (Acute Tox. 3 (Inhalation)) [H331]
Classification: Specific Target Organ Toxicity, Single Exposure, Category 1 (STOT SE 1) [H370]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS02 (Flammable), GHS06 (Toxic), GHS08 (Health Hazard)
Hazard statement: H225: Highly flammable liquid and vapor.
Hazard statement: H301: Toxic if swallowed.
Hazard statement: H311: Toxic in contact with skin.
Hazard statement: H331: Toxic if inhaled.
Hazard statement: H370: Causes damage to organs.
Precautionary statement: P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
Precautionary statement: P260: Do not breathe dust/fume/gas/mist/vapors/spray.
Precautionary statement: P280: Wear protective gloves, protective clothing, eye protection, face protection, and hearing protection.
Precautionary statement: P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
Precautionary statement: P301+P316: IF SWALLOWED: Get emergency medical help immediately.
Precautionary statement: P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Liquid
Appearance: Colorless liquid
Odor: Slight alcoholic odor when pure; repulsive, pungent odor when crude
Boiling point: 64.7°C
Melting point: -97.8°C (-144°F)
Flash point: 11°C
Density: 0.791 g/cm³ at 20°C
Vapor pressure: 127 mmHg at 20°C
Water solubility: Miscible
Log Pow (log Kow): -0.77
Vapor density: 1.11 (air = 1)
Lower explosive limit: 6%
Upper explosive limit: 36.5%
Auto-ignition temperature: 464°C (867°F)
Viscosity: 0.544 mPa.s at 25 °C
pH: Not available
Occupational exposure limits for Methanol
The airborne limits on public record in the United States. These are transcribed from the tables named in each row, not derived. The full draft puts them in Section 8 with the control and PPE guidance.
OSHA PEL — TWA (8 h)
200 ppm (260 mg/m³)
OSHA Annotated PEL Table Z-1
NIOSH REL — TWA (up to 10 h)
200 ppm
OSHA Annotated PEL Table Z-1 (NIOSH REL column)
NIOSH REL — STEL (15 min)
250 ppm
OSHA Annotated PEL Table Z-1 (NIOSH REL column)
Where each value came from
- Odor — Hazardous Substances Data Bank (HSDB)
- O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013, p. 1106
- View the record
- Flash point — Hazardous Substances Data Bank (HSDB)
- National Fire Protection Association; Fire Protection Guide to Hazardous Materials. 14th Edition, Quincy, MA 2010, p. 325-81
- View the record
- Density — The National Institute for Occupational Safety and Health (NIOSH)
- View the record
- Vapor pressure — Hazardous Substances Data Bank (HSDB)
- Boublik, T., Fried, V., and Hala, E., The Vapour Pressures of Pure Substances. Second Revised Edition. Amsterdam: Elsevier, 1984, p. 57
- View the record
- Water solubility — Hazardous Substances Data Bank (HSDB)
- Riddick, J.A., W.B. Bunger, Sakano T.K. Techniques of Chemistry 4th ed., Volume II. Organic Solvents. New York, NY: John Wiley and Sons., 1985, p. V2: 190
- View the record
- Log Pow (log Kow) — Hazardous Substances Data Bank (HSDB)
- Hansch, C., Leo, A., D. Hoekman. Exploring QSAR - Hydrophobic, Electronic, and Steric Constants. Washington, DC: American Chemical Society., 1995, p. 3
- View the record
- Lower explosive limit — Hazardous Substances Data Bank (HSDB)
- Lewis, R.J. Sr. (ed) Sax's Dangerous Properties of Industrial Materials. 11th Edition. Wiley-Interscience, Wiley & Sons, Inc. Hoboken, NJ. 2004, p. 2376
- View the record
- Auto-ignition temperature — Hazardous Substances Data Bank (HSDB)
- Same reference as flash point above.
- View the record
- Viscosity — Hazardous Substances Data Bank (HSDB)
- Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 95th Edition. CRC Press LLC, Boca Raton, FL: 2014-2015, p. 6-231
- View the record
A value with no row here was assembled from more than one record, so no single record is credited for it. The draft you buy carries this table as an appendix covering all 16 sections.
Sources
- ECHA C&L Inventory — harmonised CLP entry
- Hazardous Substances Data Bank (HSDB)
- OSHA Annotated PEL Table Z-1
- OSHA Annotated PEL Table Z-1 (NIOSH REL column)
- PubChem — GHS classification
- PubChem — compound record
- PubChem — names and identifiers
- PubChem — regulatory information
- PubChem — toxicity data
- PubChem — transport information
- The National Institute for Occupational Safety and Health (NIOSH)
Sections 1.3 and 1.4 are withheld here because the supplier and emergency contact blocks carry your own company details in the draft you buy. Every draft needs review by a competent person before it is issued.
Measured values for Methanol, and where each one comes from
36 measured values for 12 properties, read from 4 public databases. On 5 properties the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Boiling point
4 records, 64 to 65 °C
Used with vapour pressure to judge how readily the substance reaches the air you breathe.
- 64.7 °C at 760 mm Hg
- Hazardous Substances Data Bank (HSDB)
- 147 °F
- NIOSH Pocket Guide
- 64.6 °C @760 [mm Hg]
- PAC Chemical Database, U.S. Department of Energy
Melting point
4 records agree
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- -144 °F
- NIOSH Pocket Guide
Flash point
5 records, 10 to 16 °C
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- 9.7 °C (49.5 °F) - closed cup
- Hazardous Substances Data Bank (HSDB)
- 15.6 °C (open cup) /from table/
- Hazardous Substances Data Bank (HSDB)
- 52 °F (11 °C) (closed cup)
- Hazardous Substances Data Bank (HSDB)
- 52 °F
- NIOSH Pocket Guide
Auto-ignition temperature
1 record
The temperature at which the substance ignites with no spark or flame. It sets safe surface and process temperatures.
- 867 °F (464 °C)
- Hazardous Substances Data Bank (HSDB)
Explosive limits
1 record
The vapour concentration range in air that will burn. Below the lower limit and above the upper limit it will not.
- Lower explosive limit 6.0%; Upper explosive limit 36.5 %
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
6 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- VP: 92 mm Hg at 20 °C
- Hazardous Substances Data Bank (HSDB)
- VP: 18.7 kPa at 300 K
- Hazardous Substances Data Bank (HSDB)
- 127 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
- 96 mmHg
- NIOSH Pocket Guide
- 75 [mm Hg] @15.2 °C
- PAC Chemical Database, U.S. Department of Energy
Vapour density
2 records differ
Above 1 the vapour sinks and collects in pits, sumps and low enclosed spaces.
- 1.11 (Air = 1)
- Hazardous Substances Data Bank (HSDB)
Density
4 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 0.8100 at 0 °C/4 °C; 0.7866 at 25 °C/4 °C
- Hazardous Substances Data Bank (HSDB)
- 0.7914 @ 20°C
- PAC Chemical Database, U.S. Department of Energy
Solubility
5 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- Miscible with water at 25 °C
- Hazardous Substances Data Bank (HSDB)
- Miscible with water at 20 °C
- Hazardous Substances Data Bank (HSDB)
- Miscible with ethanol, ether, benzene, most organic solvents and ketones
- Hazardous Substances Data Bank (HSDB)
- Soluble in acetone, chloroform
- Hazardous Substances Data Bank (HSDB)
- Miscible
- NIOSH Pocket Guide
Partition coefficient (log Kow)
1 record
Indicates whether the substance accumulates in fat or in water, which drives the environmental sections.
- log Kow = -0.77
- Hazardous Substances Data Bank (HSDB)
Viscosity
1 record
Governs how far a spill spreads and how fast it soaks into a surface or a sorbent.
- 0.544 mPa.s at 25 °C
- Hazardous Substances Data Bank (HSDB)
Odour
2 records, each a different case
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Slight alcoholic odor when pure; repulsive, pungent odor when crude
- Hazardous Substances Data Bank (HSDB)
- Characteristic pungent odor
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Methanol, published here unchanged. Where two records disagree, the draft you buy states the value and names the record behind it, so a reviewer can see what was chosen. Every draft needs review by a competent person before it is issued.
Get the full draft SDS for Methanol
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