Methanol CAS 67-56-1 Grade AA | Wholesale Supplier

Product overview

Methanol (methyl alcohol, wood alcohol, CAS 67-56-1) is the simplest alcohol: a colorless, volatile, water-miscible liquid with a mild alcoholic odor. It is produced from synthesis gas and is one of the most traded chemical commodities, serving as a building block for formaldehyde, acetic acid, MTBE, methyl methacrylate and olefins (MTO), as a solvent and antifreeze, and increasingly as a fuel.

The grade offered meets the usual high-purity (grade AA type) requirements: color ≤ 5 Hazen, density 0.791–0.792 g/cm³ at 20 °C, boiling range ≤ 0.8 °C around 64.6 °C, potassium permanganate time ≥ 50 min, water ≤ 0.10 %, acid ≤ 0.0015 % as formic acid, carbonyl compounds ≤ 0.002 % as formaldehyde, evaporation residue ≤ 0.001 % and very low ethanol.

Methanol boils at 64.8 °C and has a flash point of 11.11 °C; it is toxic if swallowed, inhaled or absorbed through the skin. It is transported as UN 1230, class 3, packing group II, and supplied by ChemPortal in steel drums, IBC totes and ISO tank containers.

Key features

Color ≤ 5 Hazen; density 0.791–0.792 g/cm³
Water ≤ 0.10 %, acid ≤ 0.0015 %, carbonyls ≤ 0.002 %
Permanganate time ≥ 50 min, evaporation residue ≤ 0.001 %
Boiling range ≤ 0.8 °C around 64.6 °C
UN 1230, class 3, PG II; drums, IBCs, ISO tanks

Applications

Formaldehyde and urea/phenol-formaldehyde resins
Acetic acid, methyl acetate and methyl methacrylate synthesis
MTBE and biodiesel (FAME) production
Methanol-to-olefins and DME production
Solvent for coatings, inks, pharmaceuticals and extraction
Antifreeze, windshield fluid, fuel blending and denitrification carbon source

Analysis specification

Parameter	Limit
Color Hazen Pt-Co	≤5
Density, ρ20 (g/cm³)	0.791 – 0.792
Boiling range (0°C, 101.3kPa, 64.6°C±0.1°C) /°C	≤0.8
Potassium permanganate test /min	≥50
Water, ω /%	≤0.10
Acid (As HCOOH) ω /%	≤0.0015
Carbonyl compound (As HCHO), ω /%	≤0.002
Evaporation residue, ω /%	≤0.001
Ethanol, ω /%	2ppm

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Physical properties

Appearance: Colorless Liquid
Boiling point: 64.8 °C
Flash point: 11.11 °C
Solubility: Soluble

Identifiers

CAS No.	67-56-1
EINECS No.	200-659-6
HS code	2905110000
Formula	CH3OH
Molecular weight	32.04 g/mol
SMILES	CO
InChI	InChI=1S/CH4O/c1-2/h2H,1H3
InChIKey	OKKJLVBELUTLKV-UHFFFAOYSA-N
Synonyms	methyl alcohol, wood alcohol, carbinol, methyl hydroxide, MeOH

Transport & safety

UN number: UN 1230
Hazard class: Class 3
Packing group: PG II
Hazard characteristic: Flammable and toxic

Dangerous-goods classification and handling instructions are provided in the safety data sheet, available on request.

Packaging & logistics

Standard packaging options. Confirm the packaging, lot size and delivery terms with your quotation.

📄 Download the product catalogue 2026 (PDF)

Frequently asked questions

What does the permanganate time indicate?

It measures oxidizable impurities such as aldehydes and olefins: a longer time means a cleaner product. The ≥ 50 min specification is the usual requirement for grade AA methanol used in formaldehyde and acetic acid plants.

Is this methanol suitable for biodiesel production?

Yes. Its low water (≤ 0.10 %) and acid (≤ 0.0015 %) content prevents soap formation and catalyst consumption in transesterification, and the low residue avoids contamination of the glycerol phase.

What are the safety considerations?

Methanol is highly flammable (flash point 11 °C) and toxic; ingestion or heavy exposure can cause blindness. Use closed systems, grounded equipment and ventilation, and never use it as a substitute for ethanol. Transport classification is UN 1230, class 3, packing group II.

How is methanol supplied?

Steel drums, 1,000 L IBC totes and ISO tank containers, with a certificate of analysis per lot and SDS on request. Contact ChemPortal with the volume and destination for delivered pricing.

Published reference specifications. Confirm the current grade, SDS / TDS / COA, packaging and delivery terms with your quotation.