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Phosphorous Acid, Fast Delivery, ISO Certified CAS No. 13598-36-2

Name: Phosphorous Acid, Fast Delivery, ISO Certified CAS No. 13598-36-2
Brand: TRN TRADER
SKU: pr2503111206
Price: 10 USD
Availability: InStock

9 Inquiries

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CAS No.:

13598-36-2

Grade:

Agricultural Grade

Content:

46%

Port:

Texas

Brand:

TRN TRADER

Packaging:

25kg

Price valid (until):

2025-04-11

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TRN Trader LLC

Company Type:

Manufactory

Location:

United States

Qualification:

Main Products:

Fertilisers,Water Traitement,Ferro Alloys,Chemicals

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Product Description
Seller Information
Inquiry History

Description

Product Detail

Description :
Phosphorous acid is a type of phosphoric acid that can be used as a reducing agent in chemical analysis. Phosphorous acid is an inorganic compoun d with the formula H ₃PO ₃. It is a colorless to yellowish ice-like crystalline substance that is easily soluble in water and ethanol.
Phosphorous acid will be slowly oxidized into orthophosphate in the air, and will decompose into orthophosphate and phosphine when heated to 180 ℃ .
Nature:
Phosphonic acid is colorless to yellowish solid, soluble in water.
- It is a medium strong acid, taste acid, can react with metals to form the corresponding salt.
Phosphonic acid is a reducing substance that can be oxidized by oxidants.
- It is unstable in air and is easily oxidized to phosphoric acid by oxygen.

Purpose:
Phosphonic acid is used as an intermediate between reducing agents and oxidants in chemical synthesis.
- It is an important raw material for the preparation of polyphosphonates (polymers).
Phosphonic acid can also be used in the preparation of metal chemical reactions and catalysts.

Preparation:
Phosphonic acid can be obtained by the reduction of phosphoric acid.
A common way to prepare phosphonic acid is to react phosphoric acid with a reducing agent (such as phosphite).

Safety information:
Phosphonic acid is a corrosive substance that can cause pain and irritation when it comes into contact with skin and eyes. Direct contact with phosphonic acid must be avoided.
- Wear appropriate personal protective equipment such as protective gloves and goggles when using or handling phosphonic acid.
- During storage and handling, care should be taken to avoid contact with oxidizing agents or other flammable substances to avoid the risk of fire or explosion.
- If you ingest phosphonic acid or inhale its dust, seek medical advice immediately and bring packing to the hospital.

Shop Production of Phosphorous Acid for Glyphosate H3PO3 Made in China High Quality with Best Price-Detailed Image 1

Inspection item	Technical index	Inspection result
Appearance	White flake	White flake
Phosphorous acid(H3PO3),%≥	≥97%	98.34%
Iron ion(Fe),PPM≤	≤20PPM	19.87PPM
Phosphate(PO4),%≤	≤0.6%	0.2%
Sulfate(S04),%≤	≤0.008%	0.0075%

Specification:

Packing ：

25kg/bag , 500kg/bag , 1MT/bag

Shop Crystal Industrial Grade Phosphorous Acid H3PO3 CAS 13598-36-3 for Industrial Use-Detailed Image 3

Shop H3po3 Basicity Phosphorous Acid high purity for Fungicides Production CAS 13598-36-2-Detailed Image 8

Basic Info

Product Name:

Phosphonic acid

Other Name:

Phosphonic acid;Phosphorous acid;Dihydroxyphosphine oxide;1135443-40-1

CAS No.:

13598-36-2

UN No.:

2834

Molecular Formula:

H3O3P

InChIKeys:

InChIKey=ABLZXFCXXLZCGV-UHFFFAOYSA-N

Molecular Weight:

81.99580

Exact Mass:

82.00

EC Number:

233-663-1

UNII:

95E079716M

UN Number:

2834

DSSTox ID:

DTXSID7035511

HScode:

2811199090

Categories:

Inorganic Acid

Characteristics

PSA:

81.00000

XLogP3:

-0.63930

Appearance:

Phosphorous acid appears as a white or yellow crystalline solid (melting point 70.1 deg C) or a solution of the solid. Density 1.651 g /cm3 . Contact may severely irritate skin, eyes, and mucous membranes. Toxic by ingestion, inhalation and skin absorption.

Density:

1.651

Melting Point:

73 °C (approx)

Boiling Point:

200ºC

Flash Point:

200ºC

Water Solubility:

H2O: soluble

Storage Conditions:

0-6ºC

Air and Water Reactions:

Deliquescent. Absorbs oxygen from the air very readily to form phosphoric acid [Hawley]. Soluble in water.

Reactive Group:

Acids, Weak

Reactivity Profile:

PHOSPHOROUS ACID decomposes when heated to form phosphine, a gas that usually ignites spontaneously in air. Absorbs oxygen from the air to form phosphoric acid [Hawley]. Forms yellow deposits in aqueous solution that are spontaneously flammable upon drying. Reacts exothermically with chemical bases (for example: amines and inorganic hydroxides) to form salts. These reactions can generate dangerously large amounts of heat in small spaces. Dissolution in water or dilution of a concentrated solution with additional water may generate significant heat. Reacts in the presence of moisture with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain alkenes. Reacts with cyanide compounds to release gaseous hydrogen cyanide. May generate flammable and/or toxic gases in contact with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and strong reducing agents. Additional gas-generating reactions occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (to give SO2), and carbonates (to give CO2).

See More Phosphonic acid Properties 

Hazard Identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

Skin corrosion, Sub-category 1A

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Danger
Hazard statement(s)	H302 Harmful if swallowed H314 Causes severe skin burns and eye damage
Prevention	P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response	P301+P317 IF SWALLOWED: Get medical help. P330 Rinse mouth. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P316 Get emergency medical help immediately. P321 Specific treatment (see ... on this label). P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage	P405 Store locked up.
Disposal	P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Phosphonic acid Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
Fertilisers,Water Traitement,Ferro Alloys,Chemicals

Location:
5312 State Highway 121

Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance

Average lead Time:
7

Total Annual Revenue:
$10 million-$25 million

Total Employees:
51-100

Year of Establishment:
2017

Certifications:
Company Registration,US Tax Clearance 2024,Trade conformity,ACCREDITION

About Us:

TRN Trader Llc is a leading Chemicals company, dedicated to delivering top-notch products and services that exceed customer expectations. Founded in 2017 by Thomas R Newell, our organization has grown into a global entity with a strong presence worldwide.

Our Mission:

To provide innovative solutions, exceptional quality, and unparalleled customer service, fostering long-term relationships and driving business success.

Our Vision:

To be the preferred partner for TRN Trader Llc solutions worldwide, recognized for our commitment to excellence, sustainability, and community development.

Core Values:

•⁠ ⁠Customer Centricity
•⁠ ⁠Innovation
•⁠ ⁠Quality
•⁠ ⁠Integrity
•⁠ ⁠Teamwork
•⁠ ⁠Sustainability

What We Offer:

•⁠ ⁠Customized solutions tailored to your needs

Certifications and Awards:

•⁠ ⁠ISO [certification]

Global Reach:

With offices in [countries], we serve customers across [regions]. Our strategic partnerships and extensive network ensure efficient delivery and support.

Inquiry History

9 Inquiries

Country	Product	Purchase Quantity	Date Posted
Australia	Hypophosphurous acid	100 G	Mar 7, 2026
Russia	Phosphorous acid Industrial Grade best selling	210 MT	Jun 25, 2026
Philippines	Phosphorous Acid H3PO3 98.5% 99.0% Crystal Powder	50 KG	Jun 11, 2026
Egypt	Phosphorous Acid 98.5%	5 TON	Dec 9, 2024
India	Phosphorous Acid	1000.00 KG	Jul 29, 2024
United States	Phosphonic acid	1 KG	Aug 12, 2025
Poland	Phosphorous acid crystal powder [H3PO3]	100 KG	May 13, 2025
India	Phosphorous Acid	500.00 KG	Jul 9, 2024
India	Phosphonic acid	20 MT	Nov 1, 2023

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