Methacrylic acid
Also known as: 2-Methyl-2-propenoic acid, 2-Methylpropenoic acid, alpha-Methacrylic acid, 2-Methylene propionic acid, MAA
Methacrylic acid (CAS 79-41-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H6O2 and a molecular weight of 86.09000 g/mol. Key properties include a melting point of 16 °C, a boiling point of 160.5±0.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 76.7±0.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H332 — Harmful if inhaled and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Nov 4, 2026.
- CAS No.
- 79-41-4
- Jingsj CID
- J-1503831-1
- Molecular Formula
- C4H6O2
- Molecular Weight
- 86.09000 g/mol
- Category
- Organic Acids
- Last updated
- 11/4/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 16 °C |
|---|---|
| Boiling Point | 160.5±0.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 76.7±0.0 °C |
| Exact Mass | 86.036781 |
| PSA | 37.30000 |
| LogP | 0.83 |
| Additional Property | >3 (vs air) |
| Vapor Pressure | 1.2±0.6 mmHg at 25°C |
| Refractive Index | 1.430 |
| Additional Property | 9.7 g/100 mL (20 ºC) |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H332 — Harmful if inhaled
- H311 — Toxic in contact with skin
- H314 — Causes severe skin burns and eye damage
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2916130010 |
|---|---|
| Summary | HS: 2916130010. methacrylic acid. VAT:17.0%. tax rebate rate:13.0%. supervision conditions:ab(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tarrif:6.5%. general tariff:80.0% |
Frequently Asked Questions
What is the CAS number of Methacrylic acid?
The CAS number of Methacrylic acid is 79-41-4.
What are the molecular formula and molecular weight of Methacrylic acid?
Methacrylic acid has molecular formula C4H6O2 and molecular weight 86.09000 g/mol.
Is Methacrylic acid hazardous?
Methacrylic acid has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H332 — Harmful if inhaled; H311 — Toxic in contact with skin.
What are the upstream and downstream products of Methacrylic acid?
For Methacrylic acid, Upstream Products: Methacrolein, Isobutylene, 2-Bromopropene; Downstream Products: 3-(Benzylsulfanyl)-2-methylpropanoic acid, Zinc acetate, Isopropyl methacrylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methacrylic acid (CAS 79-41-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1503831-1 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.