Molekula
Trimethylacetic acid
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
Trimethylacetic acid is a branched-chain carboxylic acid used in organic synthesis and as a chemical intermediate. It is also employed in the production of specialty polymers and pharmaceuticals. Available with a purity of 98% minimum, it has a molecular weight of 102.13 g/mol and a boiling point of 160–162 °C. Molekula supplies Trimethylacetic acid 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.
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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 | White solid or liquid or solid and liquid mix |
| Water | ≤ 0.2% |
| Identification | Conforms to reference |
| Purity (GC) | ≥ 99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 63 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless cyrstals |
| Melting Point | 36 °C |
| Boiling Point | 164 °C |
| Density | 0.91 (relative, water = 1) |
| Water Solubility | 21.7 g/L at 20 °C |
| Solubility (other solvents) | Very soluble in ethanol, ethyl ether |
| Vapour Pressure | 85 Pa at 20 °C |
| Refractive Index | 1.3931 |
| pKa | pKa = 5.03 |
| log P (octanol/water) | 1.48 |
Source: PubChem CID 6417 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 90036641 |
| CAS Number | 75-98-9 |
| IUPAC Name | 2,2-dimethylpropanoic acid |
| EC Number | 200-922-5 |
| Molecular Formula | C5H10O2 |
| Molecular Weight | 102.13 |
| Exact Mass | 102.0681 |
| SMILES | CC(C)(C)C(=O)O |
| InChIKey | IUGYQRQAERSCNH-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H10O2/c1-5(2,3)4(6)7/h1-3H3,(H,6,7) |
| PubChem CID | 6417 |
| UN Number | UN3261 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2915.90.1890 |
| Tariff Code | 2915909098 |
Safety & GHS
-
Corrosive
GHS05
-
Health Hazard
GHS07
Hazard statements
- H290 May be corrosive to metals
- H302 Harmful if swallowed
- H312 Harmful in contact with skin
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H332 Harmful if inhaled
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P302+352 IF ON SKIN: Wash with soap and water
- P406 Store in a corrosive resistant container with a resistant inner liner
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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
- 2,2-DIMETHYLPROPANOIC ACID
- 2,2-Dimethylpropionic acid
- Acetic acid, trimethyl-
- alpha,alpha-Dimethylpropionic acid
- Kyselina pivalova
- Neopentanoic acid
- Pivalic acid
- Propanoic acid, 2,2-dimethyl-
- tert-Pentanoic acid
- Versatic 5
Frequently asked questions
What is trimethylacetic acid used for?
It is used as a chemical intermediate in the synthesis of pharmaceuticals, agrochemicals, and specialty polymers.
What is the chemical formula and molecular weight of trimethylacetic acid?
The formula is C5H10O2, and the molecular weight is 102.13 g/mol.
How should trimethylacetic acid be stored?
Store in a cool, dry place, away from strong oxidizing agents and moisture, in a tightly sealed container.
What grade is available for trimethylacetic acid?
Available in technical grade; custom purity levels may be available upon request.
Can Molekula supply trimethylacetic acid in bulk?
Yes, Molekula can supply trimethylacetic acid in bulk quantities; please contact sales for details.
What documentation comes with an order of trimethylacetic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided 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.