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ChemicalBook >> CAS DataBase List >> Phosphorous acid

Phosphorous acid

Phosphorous acid price.
  • $25 - $889
  • Product name: Phosphorous acid
  • CAS: 13598-36-2
  • MF: H3O3P
  • MW: 82
  • EINECS:237-066-7
  • MDL Number:MFCD00137258
  • Synonyms:Phosphorous acid, extra pure, 98%;Phosphorus trihydroxide;phosphorustrihydroxide ;Trihydroxyphosphine;PHOSPHOROUSACID,REAGENT;Phosphorous acid, 98%, extra pure;AURORA KA-1076;Ortophosphorous acid
19 prices
Selected condition：
Brand
  • Alfa Aesar
  • American Custom Chemicals Corporation
  • BroadPharm
  • Frontier Specialty Chemicals
  • GFS CHEMICALS
  • Medical Isotopes, Inc.
  • Sigma-Aldrich
  • TRC
Package
  • 5MG
  • 10g
  • 100g
  • 250g
  • 500g
  • 1l
  • 1000g
  • 2kg
  • 2.5kg
  • 5000g
  • 4x2kg
  • ManufacturerAlfa Aesar
  • Product numberA11189
  • Product descriptionPhosphorous acid, 98+%
  • Packaging250g
  • Price$34.7
  • Updated2024-03-01
  • Buy
  • ManufacturerAlfa Aesar
  • Product number089407
  • Product descriptionPhosphorous acid, 97%
  • Packaging500g
  • Price$49.7
  • Updated2024-03-01
  • Buy
  • ManufacturerAlfa Aesar
  • Product numberA11189
  • Product descriptionPhosphorous acid, 98+%
  • Packaging1000g
  • Price$101
  • Updated2024-03-01
  • Buy
  • ManufacturerAlfa Aesar
  • Product number089407
  • Product descriptionPhosphorous acid, 97%
  • Packaging2kg
  • Price$170
  • Updated2024-03-01
  • Buy
  • ManufacturerAlfa Aesar
  • Product numberA11189
  • Product descriptionPhosphorous acid, 98+%
  • Packaging5000g
  • Price$326.65
  • Updated2024-03-01
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberING0008316
  • Product descriptionPHOSPHOROUS ACID 95.00%
  • Packaging5MG
  • Price$501.82
  • Updated2021-12-16
  • Buy
  • ManufacturerBroadPharm
  • Product numberBP-21055
  • Product descriptionPhosphorous acid 99%
  • Packaging10g
  • Price$25
  • Updated2021-12-16
  • Buy
  • ManufacturerFrontier Specialty Chemicals
  • Product numberJK266364
  • Product descriptionPhosphorous acid 98%
  • Packaging500g
  • Price$71
  • Updated2021-12-16
  • Buy
  • ManufacturerFrontier Specialty Chemicals
  • Product numberJK266364
  • Product descriptionPhosphorous acid 98%
  • Packaging1000g
  • Price$128
  • Updated2021-12-16
  • Buy
  • ManufacturerGFS CHEMICALS
  • Product number59641
  • Product descriptionPhosphorous acid
  • Packaging100g
  • Price$43.86
  • Updated2021-12-16
  • Buy
  • ManufacturerGFS CHEMICALS
  • Product number59642
  • Product descriptionPhosphorous acid
  • Packaging500g
  • Price$62.2
  • Updated2021-12-16
  • Buy
  • ManufacturerGFS CHEMICALS
  • Product number59643
  • Product descriptionPhosphorous acid
  • Packaging2.5kg
  • Price$172.98
  • Updated2021-12-16
  • Buy
  • ManufacturerMedical Isotopes, Inc.
  • Product number72011
  • Product descriptionPhosphorous acid
  • Packaging100g
  • Price$575
  • Updated2021-12-16
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number215112
  • Product descriptionPhosphorous acid 99%
  • Packaging100g
  • Price$52.6
  • Updated2024-03-01
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number215112
  • Product descriptionPhosphorous acid 99%
  • Packaging500g
  • Price$99.8
  • Updated2024-03-01
  • Buy
  • ManufacturerSigma-Aldrich
  • Product number04115
  • Product descriptionPhosphorous acid solution ≥50%
  • Packaging1l
  • Price$110
  • Updated2024-03-01
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
Alfa Aesar A11189 Phosphorous acid, 98+% 250g $34.7 2024-03-01 Buy
Alfa Aesar 089407 Phosphorous acid, 97% 500g $49.7 2024-03-01 Buy
Alfa Aesar A11189 Phosphorous acid, 98+% 1000g $101 2024-03-01 Buy
Alfa Aesar 089407 Phosphorous acid, 97% 2kg $170 2024-03-01 Buy
Alfa Aesar A11189 Phosphorous acid, 98+% 5000g $326.65 2024-03-01 Buy
American Custom Chemicals Corporation ING0008316 PHOSPHOROUS ACID 95.00% 5MG $501.82 2021-12-16 Buy
BroadPharm BP-21055 Phosphorous acid 99% 10g $25 2021-12-16 Buy
Frontier Specialty Chemicals JK266364 Phosphorous acid 98% 500g $71 2021-12-16 Buy
Frontier Specialty Chemicals JK266364 Phosphorous acid 98% 1000g $128 2021-12-16 Buy
GFS CHEMICALS 59641 Phosphorous acid 100g $43.86 2021-12-16 Buy
GFS CHEMICALS 59642 Phosphorous acid 500g $62.2 2021-12-16 Buy
GFS CHEMICALS 59643 Phosphorous acid 2.5kg $172.98 2021-12-16 Buy
Medical Isotopes, Inc. 72011 Phosphorous acid 100g $575 2021-12-16 Buy
Sigma-Aldrich 215112 Phosphorous acid 99% 100g $52.6 2024-03-01 Buy
Sigma-Aldrich 215112 Phosphorous acid 99% 500g $99.8 2024-03-01 Buy
Sigma-Aldrich 04115 Phosphorous acid solution ≥50% 1l $110 2024-03-01 Buy

Properties

Melting point :73 °C
Boiling point :200 °C
Density :1.651 g/mL at 25 °C(lit.)
vapor pressure :0.001Pa at 20℃
Flash point :200°C
storage temp. :0-6°C
solubility :DMSO (Slightly), Methanol (Slightly), Water (Sparingly)
form :Crystals
pka :pK1 1.29; pK2 6.74(at 25℃)
Specific Gravity :1.651
color :White
PH :pKa1= 1.10, pKa2 = 6.33(25℃)
Water Solubility :SOLUBLE
Sensitive :Air Sensitive & Hygroscopic
Merck :14,7346
Stability :Stable. Incompatible with strong bases. Hygroscopic.
CAS DataBase Reference :13598-36-2(CAS DataBase Reference)
NIST Chemistry Reference :(HO)2HPO(13598-36-2)
EPA Substance Registry System :Phosphonic acid (13598-36-2)

Safety Information

Symbol(GHS): GHS hazard pictogramsGHS hazard pictograms
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning GHS hazard pictograms P234, P390, P404
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning GHS hazard pictograms P264, P270, P301+P312, P330, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger GHS hazard pictograms P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Precautionary statements:
P234 Keep only in original container.
P270 Do not eat, drink or smoke when using this product.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

Phosphorous acid is an intermediate in the preparation of other phosphorous compounds. It is a raw material to prepare phosphonates for water treatment such as iron and manganese control, scale inhibition and removal, corrosion control and chlorine stabilization. The alkali metal salts (phosphites) of phosphorous acid are being widely marketed either as an agricultural fungicide (e.g. Downy Mildew) or as a superior source of plant phosphorous nutrition. Phosphorous acid is used in stabilizing mixtures for plastic materials. Phosphorous acid is used for inhibiting high-temperature of corrosion-prone metal surfaces and to produce lubricants and lubricant additives.

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