Molekula
Methacrylic acid 99% stab with 100-250ppm hydroquinone or 4-Methoxyphenol
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Methacrylic acid 99% stabilized with 100–250 ppm hydroquinone or 4-methoxyphenol is a reactive monomer used in polymer synthesis, coatings, adhesives, and specialty resins. It is a clear, colorless to pale yellow liquid with a pungent odor. CAS: 79-41-4, molecular formula: C4H6O2, molecular weight: 86.09 g/mol. Stored at ambient temperature. Signal word: Danger. Molekula supplies Methacrylic acid 99% stab with 100-250ppm hydroquinone or 4-Methoxyphenol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 67 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Clear colorless liquid or colorless crystals |
| Odour | Acrid, repulsive odor |
| Melting Point | 16 °C |
| Boiling Point | 159-163 °C |
| Density | 1.02 (relative, water = 1) |
| Solubility (other solvents) | Soluble in chloroform; miscible with ethanol, ether |
| Vapour Pressure | 130 Pa at 25 °C |
| Refractive Index | 1.43143 |
| pKa | pKa = 4.65 |
| log P (octanol/water) | 0.93 |
Source: PubChem CID 4093 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90028154 |
| CAS Number | 79-41-4 |
| IUPAC Name | 2-methylprop-2-enoic acid |
| EC Number | 201-204-4 |
| Molecular Formula | CH2C(CH3)COOH |
| Molecular Weight | 86.09 |
| Exact Mass | 86.0368 |
| SMILES | CC(=C)C(=O)O |
| InChIKey | CERQOIWHTDAKMF-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6) |
| PubChem CID | 4093 |
| UN Number | UN2531 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29161300 |
| Tariff Code | 2916130090 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- H302+332 Harmful if swallowed or inhaled
- H311 Toxic in contact with skin
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
- H335 May cause respiratory irritation
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-Methyl-2-propenoic acid
- 2-Methylacrylic acid
- 2-Methylenepropionic acid
- 2-methylprop-2-enoic acid
- 2-Methylpropenoic acid
- 2-Propenoic acid, 2-methyl-
- Acrylic acid, 2-methyl-
- alpha-Methacrylic acid
- alpha-Methylacrylic acid
- Methylacrylic acid
Frequently asked questions
What is methacrylic acid primarily used for?
Methacrylic acid is commonly used as a monomer for producing polymers like poly(methyl methacrylate) (PMMA), coatings, adhesives, and as a chemical intermediate in the synthesis of pharmaceuticals and water treatment chemicals.
What is the chemical formula and molecular weight of methacrylic acid?
The chemical formula is **CH₂=C(CH₃)COOH**, and the molecular weight is **86.09 g/mol**.
How should methacrylic acid be stored?
Store at **ambient temperature** in a cool, dry place, away from direct sunlight, heat, and incompatible substances. Keep containers tightly sealed.
What grade of methacrylic acid does Molekula supply, and what stabilizer is used?
Molekula supplies **99% methacrylic acid stabilized with 100–250 ppm hydroquinone or 4-methoxyphenol** to prevent polymerization.
Can Molekula supply methacrylic acid in bulk quantities?
Yes, Molekula can provide methacrylic acid in bulk, with quantities and packaging tailored to your requirements—please contact us for details.
What documentation is provided with a methacrylic acid order?
Each order includes a **Material Safety Data Sheet (MSDS/SDS)**, Certificate of Analysis (CoA), and a packing list. Additional documentation like a Certificate of Origin or custom compliance paperwork can be arranged upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.