METHYLPHOSPHONIC ACID
- CAS No.
- 993-13-5
- Chemical Name:
- METHYLPHOSPHONIC ACID
- Synonyms
- METHANEPHOSPHONIC ACID;Phosphonic acid, methyl-;NSC 119358;METHYLPHOSPHONIC ACID;Methylphosphonicacid,98%;Phosphonic acid, P-methyl-;Methanephosphonic acid,98%;Methylphosphonic acid ,97.5%;Methanephosphonic acid, 98% 5GR;Methanephosphonic acid, 98% 25GR
- CBNumber:
- CB8201298
- Molecular Formula:
- CH5O3P
- Molecular Weight:
- 96.02
- MDL Number:
- MFCD00002137
- MOL File:
- 993-13-5.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Methylphosphonic acid 98% | 289868 | 1g | $54 |
| Methylphosphonic acid 98% | 289868 | 5g | $91 |
| p-Methylphosphonic Acid | TRC-M326905-5G | 5g | $186 |
| p-Methylphosphonic Acid | TRC-M326905-25G | 25g | $542 |
| p-Methylphosphonic Acid | TRC-M326905-10G | 10g | $256 |
| More product size | |||
| Melting point | 105-107 °C(lit.) |
|---|---|
| Boiling point | 265.2±23.0 °C(Predicted) |
| Density | 1.495±0.06 g/cm3(Predicted) |
| vapor pressure | 0Pa at 20℃ |
| storage temp. | -20°C |
| solubility | H2O: soluble2.88 g in 30 mL, clear, colorless |
| form | Crystalline Powder |
| pka | pK1:2.38;pK2:7.74 (25°C) |
| color | White to off-white |
| PH | 0.9-1.4 |
| Water Solubility | Soluble in water and alcohol. |
| Sensitive | Hygroscopic |
| λmax |
λ: 260 nm Amax: ≤0.05 λ: 280 nm Amax: ≤0.04 |
| BRN | 1739372 |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
| LogP | -1.556 at 20℃ |
| FDA UNII | 329W4YM10Z |
| EPA Substance Registry System | Phosphonic acid, P-methyl- (993-13-5) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS05 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H314 | |||||||||
| Precautionary statements | P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | C,T,F | |||||||||
| Risk Statements | 22-34-39/23/24/25-23/24/25-11 | |||||||||
| Safety Statements | 26-36/37/39-45-36/37-16-7 | |||||||||
| RIDADR | UN 3261 8/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 10 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29310099 | |||||||||
| Hazardous Substances Data | 993-13-5(Hazardous Substances Data) | |||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
METHYLPHOSPHONIC ACID price More Price(22)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 289868 | Methylphosphonic acid 98% | 993-13-5 | 1g | $54 | 2026-04-30 | Buy |
| Sigma-Aldrich | 289868 | Methylphosphonic acid 98% | 993-13-5 | 5g | $91 | 2026-04-30 | Buy |
| TRC | TRC-M326905-5G | p-Methylphosphonic Acid | 993-13-5 | 5g | $186 | 2026-06-03 | Buy |
| TRC | TRC-M326905-25G | p-Methylphosphonic Acid | 993-13-5 | 25g | $542 | 2026-06-03 | Buy |
| TRC | TRC-M326905-10G | p-Methylphosphonic Acid | 993-13-5 | 10g | $256 | 2026-06-03 | Buy |
METHYLPHOSPHONIC ACID Chemical Properties,Uses,Production
Chemical Properties
white crystals or flakes
Uses
Organic synthesis.
Uses
Methylphosphonic acid is used to produce methyl-phosphonic acid dichloride by chlorination.
Definition
ChEBI: Methylphosphonic acid is a one-carbon compound that is phosphonic acid in which the hydrogen attached to the phosphorus is substituted by a methyl group. It is a one-carbon compound and a member of phosphonic acids. It is functionally related to a phosphonic acid. It is a conjugate acid of a methylphosphonate(1-).
Application
Methylphosphonic acid is used in the production of lubricant additives and for treating textiles.
Flammability and Explosibility
Not classified
Purification Methods
Methylphosphonic acid [993-13-5] M 96.0, m 104-106o, 105-107o, 108o, pK 1 2.12, pK 2 7.29. If it tests for Cl-, then add H2O and evaporate to dryness, repeat several times till free from Cl-. The residue solidifies to a wax-like solid. Alternatively, dissolve the acid in the minimum volume of H2O, add charcoal, warm, filter and evaporate to dryness in a vacuum over P2O5. [Kosolapoff J Am Chem Soc 75 3379 1953.] The di-Na salt is prepared from 24g of acid in 50mL of dry EtOH, and a solution of 23g Na dissolved in 400mL EtOH is added. A white precipitate is formed, but the mixture is refluxed for 30minutes to complete the reaction. Filter off the solid and recrystallise it from 50% EtOH. Dry the crystals in a vacuum desiccator. [Thompson J Chem Soc 3292 1952, Beilstein 4 IV 3498.]
METHYLPHOSPHONIC ACID Preparation Products And Raw materials
Raw materials
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Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD | +86-13017695106 +86-13676922317 | jiuyitime@fdachem.com | China | 16512 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21587 | 55 |
| Chembon Pharmaceutical Co., Ltd. | +86-28-8425-2981 | CHINA | 722 | 55 | |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 33024 | 60 |
| Shenzhen Nexconn Pharmatechs Ltd | +86-755-89396905 +86-15013857715 | admin@nexconn.com | China | 10403 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49979 | 58 |
| Hubei Ipure Biology Co., Ltd | +8613367258412 | ada@ipurechemical.com | China | 10236 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 | sales@tnjchem.com | China | 34563 | 58 |
| HONG KONG IPURE BIOLOGY CO.,LIMITED | 86 18062405514 18062405514 | ada@ipurechemical.com | CHINA | 3461 | 58 |
| Chemsigma International Co., Ltd. | +86-2558742998 +86-19951791336 | info@chemsigma.com | China | 1807 | 58 |
View Lastest Price from METHYLPHOSPHONIC ACID manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-04-17 | Methylphosphonic acid
993-13-5
|
$2.20-8.80 | 1kg | 99% | 100kg | ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD | |
 |
2025-12-01 | METHYLPHOSPHONIC ACID
993-13-5
|
1KG | 98.0% | 10000KGS | Shaanxi Dideu New Materials Co. Ltd | ||
 |
2024-10-22 | METHYLPHOSPHONIC ACID
993-13-5
|
$1.00 | 1g | 98% | 1ton | Career Henan Chemica Co |
-
- Methylphosphonic acid
993-13-5
- $2.20-8.80
- 99%
- ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
-
- METHYLPHOSPHONIC ACID
993-13-5
- 98.0%
- Shaanxi Dideu New Materials Co. Ltd
-
- METHYLPHOSPHONIC ACID
993-13-5
- $1.00
- 98%
- Career Henan Chemica Co
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