Phosphorous Acid

Name: Phosphorous Acid
Brand: Vaqora Chemicals
SKU: VQ-019449

About Phosphorous Acid

Vaqora Chemicals supplies Phosphorous Acid (Industrial grade), an industrial acid / alkali registered under CAS number 13598-36-2. With the molecular formula H3O3P, it has a molar mass of 82.0 g/mol. Systematically, it is named phosphonic acid. Common synonyms include Phosphorus trihydroxide.

Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 2 hazard statements. Review the Safety Data Sheet before use.

Typical applications include pH adjustment, chemical processing and metal treatment and cleaning. It is used across water treatment, metallurgy and mining and textiles and dyeing.

Available in 25 kg, 50 kg, 200 kg drum and 1 MT packs, Phosphorous Acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

pH adjustment
Chemical processing
Metal treatment & cleaning

Industries

Specifications & identifiers

Chemical identifiers
Product name	Phosphorous Acid
Catalogue No.	VQ-019449
CAS Number	13598-36-2
IUPAC name	phosphonic acid
Molecular formula	H₃O₃P
Molecular weight	82 g/mol
Exact mass	81.982
Grade	Industrial
InChIKey	ABLZXFCXXLZCGV-UHFFFAOYSA-N
SMILES	OP(=O)O
PubChem CID	407

Physical properties
Physical form	Other
LogP (XLogP3)	-1.6
H-bond donors / acceptors	2 / 3
TPSA	57.5 Å²

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage

Precautionary statements: P260, P264, P270, P280, P301 + P317, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P321, P330, P363, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 13598-36-2

Synthesis

Phosphorous acid, 98%+

CAS: 13598-36-2
Formula: H₃O₃P
MW: 82 g/mol

VQ-016028

Frequently asked questions

What is the CAS number of Phosphorous Acid?

The CAS Registry Number of Phosphorous Acid is 13598-36-2. It is also known as Phosphorus trihydroxide.

What is the molecular formula and molecular weight of Phosphorous Acid?

Phosphorous Acid has the molecular formula H3O3P and a molecular weight of 82 g/mol. Its IUPAC name is phosphonic acid.

Which grade and pack sizes of Phosphorous Acid can I order?

We supply Phosphorous Acid in Industrial grade, in 25 kg, 50 kg, 200 kg drum, 1 MT packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Phosphorous Acid?

Yes. Every lot of Phosphorous Acid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Phosphorous Acid be shipped internationally?

Yes. Phosphorous Acid is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.