Molekula
Methacrylic acid (stab. with 100-250ppm MEHQ)
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 (stab. with 100–250 ppm MEHQ) is a reactive monomer used in the production of polymers, coatings, adhesives, and specialty chemicals. It is stabilized with MEHQ to prevent premature polymerization. CAS: 79-41-4, molecular formula: C4H6O2, molecular weight: 86.09 g/mol, stored at ambient temperature. Signal word: Danger. Molekula supplies Methacrylic acid (stab. with 100–250 ppm MEHQ) 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £29.50 per pack ex VAT · £35.40 inc. VAT
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
| Property | Value |
|---|---|
| Appearance | Clear colourless liquid |
| Water | <0.5% |
| Assay GC | >98% |
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 | 38891422 |
| 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
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Corrosive
GHS05
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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
No alternate names recorded for this product.
Frequently asked questions
What is methacrylic acid used for?
Methacrylic acid is primarily used in the production of polymers and copolymers for applications such as coatings, adhesives, and water treatment chemicals.
What is the chemical formula and molecular weight of methacrylic acid?
The formula is CH2C(CH3)COOH with a molecular weight of 86.09 g/mol.
How should methacrylic acid be stored?
It should be stored at ambient temperature, protected from light and heat, and kept away from incompatible materials.
What grade of methacrylic acid does Molekula supply?
Molekula supplies methacrylic acid stabilized with 100–250 ppm MEHQ, suitable for industrial and research applications.
Can Molekula supply methacrylic acid in bulk?
Yes, Molekula can supply methacrylic acid in bulk quantities; please contact our sales team for pricing and logistics.
What documentation comes with a purchase of methacrylic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) compliant with GHS standards.
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.