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METHYLPHOSPHONIC ACID

METHYLPHOSPHONIC ACID structure

CAS No.: 993-13-5

Chemical Name:: METHYLPHOSPHONIC ACID

Synonyms: METHANEPHOSPHONIC ACID;NSC 119358;METHYLPHOSPHONIC ACID;Phosphonic acid, methyl-;Methylphosphonicacid,98%;Methanephosphonic acid,98%;Phosphonic acid, P-methyl-;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

Last updated:2025-12-31 14:38:37

Product description	Number	Pack Size	Price
Methylphosphonic acid 98%	289868	1g	$50.7
Methylphosphonic acid 98%	289868	5g	$85.4
Methylphosphonic acid 99.0-101.0% (T)	40941	100mg	$80.4
Methylphosphonic acid 99.0-101.0% (T)	40941	500mg	$320
Methylphosphonic acid 99.0-101.0% (T)	40941	2.5g	$1280
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METHYLPHOSPHONIC ACID Properties

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
pka	pK1:2.38;pK2:7.74 (25°C)
form	Crystalline Powder
color	White to off-white
PH	0.9-1.4
Water Solubility	Soluble in water and alcohol.
λmax	λ: 260 nm Amax: ≤0.05 λ: 280 nm Amax: ≤0.04
Sensitive	Hygroscopic
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

TSCA

TSCA listed

HazardClass

PackingGroup

HS Code

29310099

Hazardous Substances Data

993-13-5(Hazardous Substances Data)

NFPA 704

	1
3		1

METHYLPHOSPHONIC ACID price More Price(17)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	289868	Methylphosphonic acid 98%	993-13-5	1g	$50.7	2025-07-31	Buy
Sigma-Aldrich	289868	Methylphosphonic acid 98%	993-13-5	5g	$85.4	2025-07-31	Buy
Sigma-Aldrich	40941	Methylphosphonic acid 99.0-101.0% (T)	993-13-5	100mg	$80.4	2025-07-31	Buy
Sigma-Aldrich	40941	Methylphosphonic acid 99.0-101.0% (T)	993-13-5	500mg	$320	2025-07-31	Buy
Sigma-Aldrich	40941	Methylphosphonic acid 99.0-101.0% (T)	993-13-5	2.5g	$1280	2025-07-31	Buy

Product number	Packaging	Price	Buy
289868	1g	$50.7	Buy
289868	5g	$85.4	Buy
40941	100mg	$80.4	Buy
40941	500mg	$320	Buy
40941	2.5g	$1280	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 synthesis

Synthesis of METHYLPHOSPHONIC ACID from Dimethyl sulfoxide and Dimethyl methylphosphonate

METHYLPHOSPHONIC ACID Preparation Products And Raw materials

Raw materials

Phosphonic acid, P-methyl-, bis(1,1-dimethylethyl) ester Sarin. (3S-trans)-3-(t-butyloxycarbonylaMino)-1-hydroxy-4-Methyl-2-azetidinone DIISOPROPYL METHYLPHOSPHONATE GB ACID

DI-N-BUTYL METHYLPHOSPHONATE METHYLPHOSPHONIC DICHLORIDE CHLOROMETHYLPHOSPHONIC ACID

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Preparation Products

boile water treatment agent NS-402 Glufosinate-ammonium NEODYMIUM CARBONATE OCTAHYDRATE Glyphosine Lanthanum oxide

Glyphosate DIPHENYL METHYLPHOSPHONATE ETHYL METHYLPHOSPHONIC ACID

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METHYLPHOSPHONIC ACID Suppliers

Global( 114)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD	+86-13017695106 +86-13676922317	jiuyitime@fdachem.com	China	16513	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21597	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	10405	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22963	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	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

Supplier	Advantage
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD	58
Henan Tianfu Chemical Co.,Ltd.	55
Chembon Pharmaceutical Co., Ltd.	55
ATK CHEMICAL COMPANY LIMITED	60
Shenzhen Nexconn Pharmatechs Ltd	58
Hubei xin bonus chemical co. LTD	58
CONIER CHEM AND PHARMA LIMITED	58
Hubei Ipure Biology Co., Ltd	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
HONG KONG IPURE BIOLOGY CO.,LIMITED	58

View Lastest Price from METHYLPHOSPHONIC ACID manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-12-01	METHYLPHOSPHONIC ACID 993-13-5	US $0.00-0.00 / KG	1KG	98.0%	10000KGS	Shaanxi Dideu New Materials Co. Ltd
2025-10-13	Methylphosphonic acid 993-13-5	US $2.20-8.80 / kg	1kg	99%	100kg	ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
2024-10-22	METHYLPHOSPHONIC ACID 993-13-5	US $1.00 / g	1g	98%	1ton	Career Henan Chemica Co

METHYLPHOSPHONIC ACID
993-13-5
US $0.00-0.00 / KG
98.0%
Shaanxi Dideu New Materials Co. Ltd

Methylphosphonic acid
993-13-5
US $2.20-8.80 / kg
99%
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD

METHYLPHOSPHONIC ACID
993-13-5
US $1.00 / g
98%
Career Henan Chemica Co

993-13-5(METHYLPHOSPHONIC ACID)Related Search:

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TRIETHYL PHOSPHONOACETATE ETHYLPHOSPHONIC ACID METHYLENEDIPHOSPHONIC ACID Phenylphosphonic acid 3-Aminopropylphosphonic acid

Diethyl cyanomethylphosphonate (Aminomethyl)phosphonic acid TRIETHYL 4-PHOSPHONOCROTONATE PHOSPHONOACETIC ACID TRIMETHYLSILYL DIETHYLPHOSPHONOACETATE

Trimethyl phosphonoacetate DIETHYL 4-AMINOBENZYLPHOSPHONATE TRIETHYL 2-PHOSPHONOPROPIONATE

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Phosphonic acid, methyl- METHYLPHOSPHONIC ACID METHANEPHOSPHONIC ACID Methylphosphonicacid,98% Methanephosphonic acid,98% Methylphosphonic acid ,97.5% Methanephosphonic acid, 98% 25GR Methanephosphonic acid, 98% 5GR NSC 119358 Methylphosphonic acid solution Phosphonic acid, P-methyl- 993-13-5 CH3POOH2 CH5O3P Building Blocks Phosphorus Compounds Phosphonic/Phosphinic Acids Organic Building Blocks Organic Building Blocks Phosphonic/Phosphinic Acids Phosphorus Compounds