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Phosphoric acid

Phosphoric acid Suppliers list
Company Name: Hangzhou Bayee Chemical Co., Ltd.
Tel: 0086-571-86990109; 0086-18605816692
Email: rachelhoo@bayeechem.com
Products Intro: Product Name:Phosphoric Acid
CAS:7664-38-2
Purity:85% Package:in 35kg or 330kg plastic drum, or 1000L IBC. Remarks:Food Grade
Company Name: Shanghai Macklin Biochemical Co.,Ltd.  Gold
Tel:15221275939
Email:shenlinxing@macklin.cn
Products Intro:Product Name:Phosphoric acid
CAS:7664-38-2
Purity:Standard for GC, >=99% (GC) Package:5g
Company Name: Shanghai Aladdin Bio-Chem Technology Co.,LTD  Gold
Tel:021-20337333/400-620-6333
Email:sale@aladdin-e.com
Products Intro:Product Name:Phosphoric acid
CAS:7664-38-2
Purity:GR, >=85 wt. % in H2O Package:219RMB/500ML
Company Name: J & K SCIENTIFIC LTD.  
Tel:400-666-7788 +86-10-82848833
Email:jkinfo@jkchemical.com;market6@jkchemical.com
Products Intro:Product Name:Phosphoric acid, 85% solution in H2O, ACS reagent
CAS:7664-38-2
Purity:>98% Package:2.5L,500ML
Company Name: Meryer (Shanghai) Chemical Technology Co., Ltd.  
Tel:+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
Email:sh@meryer.com
Products Intro:Product Name:Orthophosphoric acid
CAS:7664-38-2
Purity:85% Package:500Ml Remarks:E15001
Phosphoric acid Basic information
Product Name:Phosphoric acid
Synonyms:FEMA 2900;EXTRAN(R) AP 21;EXTRAN(R) AP21, ACID RINSE DETERGENT WITH PHOSPHORIC ACID;EXTRAN(R) AP21 DETERGENT;EXTRAN AP 21;H3PO4;U.N. 1805;Acide phosphorique
CAS:7664-38-2
MF:H3O4P
MW:98
EINECS:231-633-2
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
Phosphoric acid Structure
Phosphoric 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 | PHOSPHORIC ACID
storage temp. Store below +30°C.
solubility H2O: soluble
pka2.1-7.2-12.3(at 25℃)
form Solid or Viscous Liquid
color ≤10(APHA)
PH<0.5 (100g/l, H2O, 20℃)
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
3-10
TSCA Yes
HazardClass 8
PackingGroup III
Hazardous Substances Data7664-38-2(Hazardous Substances Data)
MSDS Information
ProviderLanguage
Phosphorous acid English
SigmaAldrich English
ACROS English
ALFA English
Phosphoric acid Usage And Synthesis
DescriptionPhosphoric acid was prepared first by Robert Boyle in 1694 by dissolving phosphorus pentoxide in water. Phosphoric acid is probably the most important compound of phosphorus. It is the second largest inorganic chemical by volume, after sulfuric acid, marketed in the United States. The single most important application of this acid is manufacturing phosphate salts for fertilizers. Such fertilizer phosphates include sodium, calcium, ammonium, and potassium phosphates. Other applications are in metal pickling and surface treatment for removal of metal oxides from metal surfaces; electropolishing of aluminum; as a bonding agent in various refractory products such as alumina and magnesia; as a catalyst in making nylon and gasoline; as a dehydrating agent; in fireproofing wood and fabrics; in lithographic engraving; in textile dyeing; in dental cement; in coagulating rubber latex; in purifying hydrogen peroxide; and as a laboratory reagent. Dilute solutions of phosphoric acid are used as additives to carbonated beverages for a pleasing sour taste. Also, dilute acid is used in refining sugar; as a nutrient; and as a buffering agent in preparing jam, jelly, and antibiotics. The commercial phosphoric acid is 85% (w/w) in strength.
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
PreparationLow-purity technical grade phosphoric acid for use in fertilizers is produced from phosphate rocks by digestion with concentrated sulfuric acid. The apatite types, primarily consisting of calcium phosphate phosphate rocks, are used: Ca3(PO4)2 + 3H2SO4 + 6H2O → 2H3PO4 + 3(CaSO4•2H2O)
The insoluble calcium sulfate slurry is filtered out. Acid from this wet process is impure but can be purified by various methods. Purification steps involve precipitation, solvent extraction, crystallization, and ion exchange techniques.
Phosphoric acid also can be made by many different methods. Dissolution of phosphorus pentoxide in water and boiling yields phosphoric acid. Pure phosphoric acid can be obtained by burning phosphorus in a mixture of air and steam:
P4 (l) + 5O2 (g) →P4O10 (s)
P4O10 (s) + H2O (g) → 4H3PO4 (l)
The acid also may be prepared by heating violet phosphorus with 33% nitric acid:
4P + 10HNO3 + H2O → 4H3PO4 + 5NO ↑ + 5NO2 ↑
or by heating red phosphorus with nitric acid (1:1). The overall equation is:
P + 3HNO3 → H3PO4 + NO + 2NO2
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.
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