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Phosphorous Acid H3PO3 98.5% 99.0% Crystal Powder CAS 13598-36-2

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CAS No.:

13598-36-2

Grade:

Industrial Grade

Content:

98.5%

Port:

Tianjin

Brand:

TNN

Packaging:

25kg/bag

Price valid (until):

2025-12-31

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The TNN Development Limited

Company Type:

Trader

Location:

China

Qualification:

Main Products:

Sodium benzoate,Potassium sorbate,Xanthan gum,phosphoric acid,citric acid,Aminophylline anhydrous

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Product Description
Seller Information
Inquiry History

Description

Product Detail

The phosphorous acid produced by us is completely soluble in water, the content is above 98.5%, and the content of heavy metals is very low.Widely used as a raw material for the manufacture of phosphite; Plastics industry as a raw material for the manufacture of plastic stabilizer; Used as a reducing agent in chemical reactions.and it is suitable for spraying fertilizer. Our customers are all over Europe, America, South America, Oceania, the Middle East and Southeast Asia.

CAS No.	13598-36-2
Name	Phosphorous acid
Alias	rac-Phoenicol; orthophosphorus acid; Phoenicol
Molecular formula	H3PO3
Molecular weight	82.00
Melting point	73.6ºC
Density	Relative density (water =1)1.65
Vapor pressure	200ºC(decomposition)
Solubility	Soluble in water, alcohol
Stability	Stable
Appearance and properties	White crystalline powder, garlic flavor, easy to deliquescence
Danger mark	20 (acid corrosive products)
Uses	1.It is a raw material for the manufacture of plastic stabilizers, and is also used in the manufacture of synthetic fibers and phosphite. 2.It can be used as an intermediate of glyphosate and ethephon, and can also be used to produce high-efficiency water treatment agent.

Specification	Results
Appearance	White crystal	confirm
Content (H3PO3),%	≥ 99%	99.16%
Iron (as Fe),%	≤0.001	0.0008
Phosphate %	≤0.20	0.10
Sulphate (as SO4),%	≤0.008	0.006
Chloride (as Cl),%	≤0.01	0.002
Conclusion:The subject material conforms to the HG/T2520-2006 Standards.

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Professional supplier of Chinese source since 1998

ISO, CE, GMP, FDA certified Exporting to 60+ Countries Pre-shipment sample. Over 20 Years' Import and Export Experience

TNN was founded in 1998 in Dalian China with headquarter in Dalian, overseas branch offices in the USA, Australia, and Dubai. TNN has three domestic branches in Jilin, Shanghai, and Shenyang. Mix container and professional loading with taking photos off every step. Our own laboratory, pre-shipment sample before shipment, and keep batch samples.

Our Mission: In order to seek wealthy and spiritual life for all TNN members, constantly improving foreign trade services. Striving to promote people's life around the world!

Our Products: Specialize in chemicals, Health & Medicine, Food Additive, fashion accessories, lotion pumps & sprayers, gloves & other epidemic prevention products, and bottle caps supplied to all over the world. TNN will make your life better.

ISO9001: 2015 Company with Perfect Loading: Certified by ISO9001, CE, GMP, FDA, specializing in food, feed additives, APIS, Cosmetics, Medical instruments, chemical raw materials, and more.

Exporting to 60+ Countries: Our products have been sold to clients all over the world, such as Japan, Korea, Mideast, Middle Asia, Europe, Africa, India, South America, keeping a cooperative relationship with 60+ countries. We are firmly committed to our mission of creating a global trade network on supply, sales, and service.

Shop Phosphorous Acid H3PO3 98.5% 99.0% Crystal Powder CAS 13598-36-2-Detailed Image 7

Our Advantages:
Who are we?
1. TNN was founded in 1998 with headquarters in Dalian, branch offices in USA, Austrilia.
2. ISO9001 Certificated,annual Sales Amount 28million US dollors, cooperative ralationship with 60+countries.

What we can do?
1. Customer-oriented sourcing and supply service.
2. Pre-shipment sample test and third-party inspection to assure product quality.
3. Customized label and packing, reinforced palletizing method to keep cargo in good condition.
4. Professtional service on mixed container load with 20+ different products in one consignment.
5. Fast speed of delivery under multiple modes of trasportation including sea,railway,air,courier.

Advantages:
1.     25-year export experience
2.     Mix container and professional loading with taking photos of every step.
3.     Our own lab, test pre-shipment sample before shipment and keep batch samples

Strict quality control:
Firstly test pre-shipment sample by TNN's lab,
If test succeeds, deliver (same batch) pre-shipment sample and confirm the Original COA with clients,
After confirmation we ship the (same batch) cargos.
If test fails,shipment suspends,TNN corrects and offers qualified one.

Mission interpretation

Income: Stable and keep rising

Well-off life: Have a car and there own house, Children can get a good education，The old can be supported

Work hard: become an expert in our field

The fastest delivery, The fastest shipment , The fastest documents

Transportation for mixed products containers and dangerous cargos

Keep stock

Provide market analysis report

Multiple payment ways long payment periods

Exported dihydroartemisinin to Nigeria to make the medicine for malari。

The Charity Federation of Africa raised money and bought a water line

give discounts , timely delivery with insufficient balance.

In 2006,TNN passed verification of ISO 9001:2008.Since 2016,TNNhas established 3 overseas companies and warehouses in USA,AUS,UAE to keep fast delivery.Meanwhile TNN now is shareholder offactories for some food additives,mini air pump and easy pull cap.

The TNN Development Limited is a manufacturing and distributinggroup for food additives and machine with ISO 9001:2008 Certificate.TNN is working closely with partners from Europe,Asia,North America,Latin America and Africa for export business of below:

●Food Additives & Plant Extracts

●Fine Chemicals

●Cosmetics

●Pharmaceutical Raw Materials(API)

Certificates

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:
Trader

Main Products:
Sodium benzoate,Potassium sorbate,Xanthan gum,phosphoric acid,citric acid,Aminophylline anhydrous

Location:
RM2901, Rainbow Building, No.23, Renmin Road, Zhongshan Dist.

Payment Terms:
TT against copy of documents,D/P,L/C,D/A,O/A

Average lead Time:
30

Total Annual Revenue:
$10 million-$25 million

Total Employees:
11-50

Year of Establishment:
2006

Certifications:
QUALITY MANAGEMENT SYSTEM CERTIFICATE,kosher certification,SERTIFIKAT HALAL-HALAL CERTIFICATE,EU GMP

Over 25 Years' Import and Export Experience
TNN was founded in 1998 in Dalian China with headquarter in Dalian, overseas branch offices in the USA, Australia, and Dubai. TNN has three domestic branches in Jilin, Shanghai, and Shenyang. Mix container and professional loading with taking photos of every step. Our own laboratory, pre-shipment sample before shipment, and keep batch samples.

Our Products
Specialize in chemicals, fashion accessories, lotion pumps & sprayers, tyres, gloves & other epidemic prevention products, and bottle caps supplying to all over the world. TNN will make your life better.

ISO9001:2015 Company with Perfect Loading
Certified by ISO9001, CE, GMP, FDA, specializing in food, feed additives, APIS, Cosmetics, Medical instruments, chemical raw materials, and more.

Exporting to 60+ Countries
Our products have been sold to clients all over the world, such as Japan, Korea, Mideast, Middle Asia, Europe, Africa, India, South America, keeping a cooperative relationship with 60+ countries. We are firmly committed to our mission of creating a global trade network on supply, sales, and service.

Cooperate with Us Today
Contact us today to discuss mutually beneficial cooperation.

Inquiry History

9 Inquiries

Country	Product	Purchase Quantity	Date Posted
Australia	Hypophosphurous acid	100 G	Mar 7, 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
United Kingdom	Phosphorous acid 99%	28 MT	Jul 1, 2023

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Phosphorous Acid H3PO3 98.5% 99.0% Crystal Powder CAS 13598-36-2

Product Description

Seller Information