Phosphorous acid Industrial Grade best selling
9 Inquiries
13598-36-2
Industrial Grade
SHANGHAI
280kg/2kg Cardboard Drum
2016-10-19
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Product Description
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Seller Information
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Inquiry History
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Description
English name: Phosphorous acid
CAS: 13598-36-2
Molecular formula: H3O3P
MW: 82
Purposes: as a reducing agent, nylon whitening agent, also used as a raw material phosphite, pesticide intermediates, manufacturing phosphite raw materials, but also the manufacture of plastic stabilizer (such as: Dibasic lead phosphate) and organic phosphorus pesticide raw materials. Polycarbonate is used as a stabilizer. Nylon is also used as an antioxidant 1010. For chemical reagents and water treatment materials.
Production methods: industrial production methods and hydrolysis of phosphorus trichloride phosphite method.
Packing: 280kg plastic drum
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:
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).
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 4, Oral
Skin corrosion, Sub-category 1A
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) H302 Harmful if swallowed
H314 Causes severe skin burns and eye damage
Precautionary statement(s) 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 StoragePrecautions 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.
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Seller Information
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Business Type:
Manufactory
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Location:
Economic Development Zone,Xinyi,Jiangsu Province, China.
Xinyi Yonglong Chemical Co.,Ltd. located in Chemical Industrial Zone in Xinyi,Jiangsu Province.As the national pesticide manufacturing base,our company has a advanced geographical position and a convenient transportation.Our company dedicate to the technological innovation. Cooperating with top colleges and institutes,we research and develop highest international level acaricide-chlorfenapyr and spirodiclofen.Xinyi Yonglong Chemical has 1,000 tons' annual production capacity of chlorfenapyr product since the introduction of new production line in May, 2011, spirodiclofen 200 tons,and other intermediates:pyrrolecarbonitrile 300 tons,2-chloroacrylonitrile 300 tons,2,3-dichloropropionitrile 500 tons,chloromethyl ethyl ether300 tons,phosphorous acid 200 tons.With the business principle of "quality create brand,brand brings market",with the cooperation of college and institutes,we put large research and development investment, provide our customer with the most advanced quality products.With the first-class equipments,technology and management,owning strict quality management system and service system,we guarantee the quality of our products to our customers.Sticking to the mission of excellent quality,development,innovation and continuous improvement,customer first,we will serve our customers and make contribution to the society.
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Inquiry History9 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 Post an enquiry for this product
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