Molekula
Trimethyl phosphate
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
Trimethyl phosphate is a colorless liquid used as a solvent, flame retardant, and intermediate in organic synthesis. It is classified as hazardous with a signal word of Danger. CAS: 512-56-1, Molecular formula: C3H9O4P, Molecular weight: 140.07 g/mol. Stored at ambient temperature. Molekula supplies Trimethyl phosphate 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.
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500 g — £46.70 per pack ex VAT · £56.04 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Clear, colourless liquid |
| Refractive Index | 1.393-1.397 |
| Colour (Pt-Co) | ≤10 |
| Water | ≤0.2% |
| Assay | ≥ 99% |
| Acid Value (mg KOH/g) | ≤ 0.05 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 107 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Liquid |
| Odour | Pleasant smelling |
| Melting Point | -46 °C |
| Boiling Point | 197.2 °C |
| Density | 1.2 (relative, water = 1) |
| Water Solubility | 500 g/L at 25 °C |
| Solubility (other solvents) | Slightyl soluble in ethanol; soluble in ethyl ether |
| Vapour Pressure | 0.11 kPa at 20 °C |
| Refractive Index | 1.3967 |
| log P (octanol/water) | -0.52 |
Source: PubChem CID 10541 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 74502234 |
| CAS Number | 512-56-1 |
| IUPAC Name | trimethyl phosphate |
| EC Number | 208-144-8 |
| Molecular Formula | C3H9O4P |
| Molecular Weight | 140.07 |
| Exact Mass | 140.0238 |
| SMILES | COP(=O)(OC)OC |
| InChIKey | WVLBCYQITXONBZ-UHFFFAOYSA-N |
| InChI | InChI=1S/C3H9O4P/c1-5-8(4,6-2)7-3/h1-3H3 |
| PubChem CID | 10541 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29199050 |
| Tariff Code | 2919900090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H340 May cause genetic defects
- H351 Suspected of causing cancer
Precautionary statements
- P263 Avoid contact during pregnancy/while nursing
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- Methyl phosphate, (MeO)3PO
- O,O,O-Trimethyl phosphate
- Phosphate, trimethyl-
- Phosphoric acid, trimethyl ester
- TMPA
- TMPO
- Trimethoxyphosphine oxide
- Trimethyl orthophosphate
- Trimethylfosfat
- TZZ
Frequently asked questions
What is trimethyl phosphate used for?
Trimethyl phosphate is primarily used as a solvent and reagent in organic synthesis, particularly in phosphorylation reactions and as a methylating agent.
What is the chemical formula and molecular weight of trimethyl phosphate?
The chemical formula is C3H9O4P and the molecular weight is 140.07 g/mol.
How should trimethyl phosphate be stored?
Trimethyl phosphate should be stored at ambient temperature, away from moisture and incompatible materials.
What grade of trimethyl phosphate does Molekula supply?
Molekula supplies trimethyl phosphate in reagent grade, suitable for laboratory and industrial applications.
Can Molekula supply trimethyl phosphate in bulk?
Yes, Molekula can supply trimethyl phosphate in bulk quantities; please contact our sales team for volume pricing and availability.
What documentation comes with a purchase of trimethyl phosphate?
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.