ChemicalBook > Product Catalog >Inorganic chemistry >Inorganic acid >Phosphorous acid

Phosphorous acid

Phosphorous acid Suppliers list
Company Name:Shanghai Macklin Biochemical Co.,Ltd.  Gold
Company Name:Shanghai Aladdin Bio-Chem Technology Co.,LTD  Gold
Company Name:J & K SCIENTIFIC LTD.  
Tel:400-666-7788 +86-10-82848833;
Company Name:Meryer (Shanghai) Chemical Technology Co., Ltd.  
Tel:+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
Company Name:Alfa Aesar  
Tel:400-610-6006; 021-67582000
Phosphorous acid Basic information
Product Name:Phosphorous acid
Product Categories:INORGANIC & ORGANIC CHEMICALS;Inorganics;HPLC;HPLC Buffer;HPLC Buffers;HPLC Buffers - SolutionChromatography/CE Reagents;Solution;PAlphabetic;Analytical Standards;NMRStable Isotopes;P;PER - POLA;Spectroscopy;Alphabetical Listings;Flavors and Fragrances;O-P;Organic Phosphonates;inorganic acid;HPLC and LCMS Mobile Phase Additive;Pyridines;Food additives
Mol File:7664-38-2.mol
Phosphorous acid Structure
Phosphorous acid Chemical Properties
Melting point ~40 °C(lit.)
Boiling point 158 °C(lit.)
density 1.685 g/mL at 25 °C(lit.)
vapor density 3.4 (vs air)
vapor pressure 2.2 mm Hg ( 20 °C)
refractive index n20/D 1.433
FEMA 2900
solubility H2O: soluble
color ≤10(APHA)
Water Solubility MISCIBLE
Merck 14,7344
CAS DataBase Reference7664-38-2(CAS DataBase Reference)
NIST Chemistry ReferencePhosphoric acid(7664-38-2)
EPA Substance Registry SystemPhosphoric acid(7664-38-2)
Safety Information
Hazard Codes C,Xn,T,F
Risk Statements 34-35-22-39/23/24/25-36/38-23/24/25-11
Safety Statements 7-16-26-36/37-45-36/37/39-1/2-24/25
RIDADR UN 3453 8/PG 3
WGK Germany 3
RTECS TB6300000
HazardClass 8
PackingGroup III
Hazardous Substances Data7664-38-2(Hazardous Substances Data)
MSDS Information
Phosphorous acid English
SigmaAldrich English
ACROS English
ALFA English
Phosphorous acid Usage And Synthesis
Chemical PropertiesClear liquid
UsesPhosphorous acid is used for reaction with inorganic and organic products, for water treatment, industrial and agricultural uses. It is also used to bleach industrial and cleaning supplies. Contact
DefinitionChEBI: A phosphorus oxoacid that consits of one oxo and three hydroxy groups joined covalently to a central phosphorus atom.
General DescriptionA clear colorless liquid or transparent crystalline solid. The pure solid melts at 42.35°C and has a density of 1.834 g / cm3. Liquid is usually an 85% aqueous solution. Shipped as both a solid and liquid. Corrosive to metals and tissue. Used in making fertilizers and detergents and in food processing.
Air & Water ReactionsSoluble in water with small release of heat.
Reactivity ProfilePhosphorous acid reacts exothermically with bases. May react with active metals, including such structural metals as aluminum and iron, to release hydrogen, a flammable gas. Can initiate the polymerization of certain classes of organic compounds. 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. Forms explosive mixture with nitromethane. Reacts violently with sodium tetrahydroborate. In the presence of chlorides can corrode stainless steel to form explosive hydrogen gas. Emits toxic and irritating fumes of oxides of phosphorus when heated to decomposition [Lewis, 3rd ed., 1993, p. 1029].
Health HazardBurns on mouth and lips, sour acrid taste, severe gastrointestinal irritation, nausea, vomiting, bloody diarrhea, difficult swallowing, severe abdominal pains, thirst, acidemia, difficult breathing, convulsions, collapse, shock, death.
Fire HazardNon-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Tag:Phosphorous acid(7664-38-2) Related Product Information
Clindamycin phosphate Fludarabine phosphate Orthophosphoric acid butyl ester Tetrasodium pyrophosphate Orthophosphoric acid hexyl ester ASCORBICACID Potassium dihydrogen phosphate phosphoric acid ACETYL PHOSPHATE LITHIUM POTASSIUM SALT Triphenyl phosphate Glycine Phosphorous acid Citric acid Sodium phosphate tribasic dodecahydrate ACETIC ACID Folic acid Stearic acid Diammonium phosphate