Phosphorous acid supplier | CasNO.10294-56-1

Name
Phosphorous acid
EINECS 233-663-1
CAS No. 10294-56-1
Article Data16
CAS DataBase
Density
Solubility SOLUBLE
Melting Point 73℃
Formula H₃PO₃
Boiling Point
Molecular Weight 81.9958
Flash Point
Transport Information UN 2834
Appearance COA
Safety 1/2-26-36/37/39-45
Risk Codes 22-35
Molecular Structure
Hazard Symbols Xn,C
Synonyms 10294-56-1
PSA 74.28000
LogP -0.80980

Synthetic route

: phosphorus

: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With chlorine byproducts: HCl;

: 14701-21-4
silver (I) ion

: 6303-21-5
hypophosphorous acid

A: 7440-22-4
silver

B: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
In perchloric acid Kinetics; oxidation hypophosphorous acid with silver(I) in aq. perchloric acid soln. at 30°C;

...Expand

: 7789-60-8
phosphorus tribromide

A: 13598-36-2
phosphonic Acid

B: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With water In neat (no solvent) formation of H3PO3 and P(OH)3 is proved by UV absorption and mild oxidation of products of hydrolysis;;

: 7647-01-0
hydrogenchloride

: phosphorus

: 7732-18-5
water

: 78-93-3
butanone

A: 1-hydroxy-1-methylpropylphosphine oxide

B: bis(1-hydroxy-1-methylpropyl)phosphine oxide

C: 6303-21-5
hypophosphorous acid

D: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With aluminium for 8h; Inert atmosphere; Schlenk technique; Sealed tube; Electrolysis;

...Expand

: 7647-01-0
hydrogenchloride

: phosphorus

: 7732-18-5
water

: 107-87-9
2-Pentanone

A: 1-hydroxy-1-methylbutylphosphine oxide

B: bis(1-hydroxy-1-methylbutyl)phosphine oxide

C: 6303-21-5
hypophosphorous acid

D: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With aluminium for 8h; Inert atmosphere; Schlenk technique; Sealed tube; Electrolysis;

...Expand

: 7647-01-0
hydrogenchloride

: phosphorus

: 7732-18-5
water

A: 86119-84-8, 7664-38-2
phosphoric acid

B: 6303-21-5
hypophosphorous acid

C: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With 3,3-dimethyl-butan-2-one; aluminium for 8h; Inert atmosphere; Schlenk technique; Sealed tube; Electrolysis;

...Expand

: 101-02-0
triphenyl phosphite

A: 2310-89-6
phenyl hydrogen phosphonate

B: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With [Pt(H2O)2(1,1'-bis(diphenylphosphanyl)octamethylferrocene)](trifluoromethylsulfonate)2; water In tetrahydrofuran at 20℃; for 8h; Catalytic behavior; Mechanism; Reagent/catalyst; Solvent; Inert atmosphere; Schlenk technique; Sealed tube;

: 4712-55-4
diphenyl hydrogen phosphite

A: 2310-89-6
phenyl hydrogen phosphonate

B: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With water In tetrahydrofuran at 20℃; for 0.5h; Inert atmosphere; Schlenk technique; Sealed tube;

: 13674-84-5
tris-(2-chloro, 1-methylethyl)-phosphate

A: 849585-22-4
LACTIC ACID

B: 57-55-6
propylene glycol

C: 14807-82-0
1-hydroxypropan-2-yl dihydrogenphosphate

D: 1611-31-0
diisopropylphosphate

E: 513-02-0
triisopropyl phosphate

F: 16136-84-8
cis-1-chloropropene

G: 124-38-9
carbon dioxide

H: 86119-84-8, 7664-38-2
phosphoric acid

I: bis(1-hydroxypropan-2-yl) hydrogenphosphate

J: 16887-00-6
chloride

K: 144-62-7
oxalic acid

L: hydrogen cation

M: 14265-44-2
Phosphate

N: 67-63-0
isopropyl alcohol

O: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
With dihydrogen peroxide In water UV-irradiation;

...Expand

: 143-07-7
lauric acid

: 7719-12-2, 52843-90-0
phosphorus trichloride

: 10294-56-1
phosphorous acid

Conditions

Conditions	Yield
at 63℃; for 3h;

: 100-46-9
benzylamine

: 10294-56-1
phosphorous acid

: 103-49-1
dibenzylamine

Conditions

Conditions	Yield
With benzaldehyde; triethylamine	98%

: 135-19-3
β-naphthol

: 10294-56-1
phosphorous acid

: 135-88-6
N-Phenyl-2-naphthylamine

Conditions

Conditions	Yield
With aniline In water	94%

: 7647-01-0
hydrogenchloride

: molybdenum(VI) oxide

: potassium hydroxide

: 10294-56-1
phosphorous acid

: 1.7K(1+)*0.3H(1+)*HPMo6O21(2-)

Conditions

Conditions	Yield
In water at 100℃; for 6h; pH=Ca. 1.5; Temperature; Autoclave;	92%

...Expand

: 95-53-4
o-toluidine

: 10294-56-1
phosphorous acid

: 108-46-3
recorcinol

: 6264-98-8
3-(o-tolylamino)phenol

Conditions

Conditions	Yield
In water	90%

...Expand

: 1258947-79-3
tris(4-(1H-imidazol-1-yl)-phenyl)amine

: 7732-18-5
water

: zinc(II) oxide

: 10294-56-1
phosphorous acid

: [Zn3(HPO3)3(tris(4-(1H-imidazol-1-yl)phenyl)amine)]·6H2O

Conditions

Conditions	Yield
With hydrogen fluoride In N,N-dimethyl-formamide at 145℃; for 168h; Autoclave;	90%

...Expand

: N-methyltetrahydro-3-thiophenamine 1,1-dioxide hydrochloride

: 10294-56-1
phosphorous acid

: tetrahydro-N-methyl-N-(phosphonomethyl)-3-thiophenamine 1,1-dioxide

Conditions

Conditions	Yield
With paraformaldehyde In P2 O5; ethanol; water	86.3%

: 110-85-0
piperazine

: 67-56-1
methanol

: 5970-45-6
zinc(II) acetate dihydrate

: 10294-56-1
phosphorous acid

: [N,N,N′,N′-tetramethylpiperazinium]0.5[Zn2(HPO3)2(H2PO3)]

Conditions

Conditions	Yield
In water at 160℃; for 168h; Autoclave; High pressure;	82.6%

...Expand

: Ru(NH3)5Cl(2+)*2Cl(1-)=Ru(NH3)5Cl3

: 201230-82-2
carbon monoxide

: 7732-18-5
water

: 10294-56-1
phosphorous acid

zinc amalgam: zinc amalgam

: CH15N4O4PRu(2+)*Cl4Zn(2-)*H2O

Conditions

Conditions	Yield
Stage #1: Ru(NH3)5Cl(2+)*2Cl(1-)=Ru(NH3)5Cl3; water; zinc amalgam With trifluoroacetic acid for 0.666667h; Inert atmosphere; Stage #2: phosphorous acid for 1h; Inert atmosphere; Stage #3: carbon monoxide for 5h;	82%

...Expand

: 100-46-9
benzylamine

: 10294-56-1
phosphorous acid

: 4383-25-9
N-benzylcyclohexylamine

Conditions

Conditions	Yield
	80%

: iron(II) chloride hexahydrate

: 1310-73-2
sodium hydroxide

: 10294-56-1
phosphorous acid

: 2Na(1+)*Fe(2+)*2HPO3(2-)=Na2Fe(HPO3)2

Conditions

Conditions	Yield
With NH3H2O In water High Pressure; Fe salt, NaOH, H3PO4 and H2O mixed in molar ratio 2:2.5:2.5:667, treatedwith NH3H2O soln. to pH=7.0, sealed in stainless sleel autoclave, heat ed at 433 K for 5 d; filtered, washed (ethanol), dried at room temp., XRD, elem. anal.;	80%

...Expand

: 10294-56-1
phosphorous acid

: 142-73-4
iminodiacetic acid

: 5994-61-6
phosphonomethylimino-di-acetic acid

Conditions

Conditions	Yield
With formaldehyd; sulfuric acid	78.2%
With formaldehyd; sulfuric acid	75.3%
With formaldehyd; sulfuric acid	74.2%
With formaldehyd; sulfuric acid In water	59.8%

: zinc(II) nitrate hexahydrate

: 2783-17-7
1,12-Diaminododecane

: 100-21-0
terephthalic acid

: 7664-39-3
hydrogen fluoride

: 10294-56-1
phosphorous acid

: (H2DIA)Zn2(1,4-benzenedicarboxylate)(HPO3)2

Conditions

Conditions	Yield
In water; N,N-dimethyl-formamide at 150℃; for 48h;	78%

...Expand

: 67-56-1
methanol

: 5970-45-6
zinc(II) acetate dihydrate

: 109-07-9
(RS)-2-methylpiperazine

: 10294-56-1
phosphorous acid

: [N,N,N’,N’-tetramethyl-2-methylpiperazinium][Zn3(HPO3)4]

Conditions

Conditions	Yield
In water at 155℃; for 168h; Autoclave;	77.4%

...Expand

: 4282-31-9
Thiophene-2,5-dicarboxylic acid

: zinc(II) nitrate hexahydrate

: 2783-17-7
1,12-Diaminododecane

: 10294-56-1
phosphorous acid

: C12H28N2*2HO3P(2-)*C6H2O4S(2-)*2H(1+)*2Zn(2+)

Conditions

Conditions	Yield
In water; N,N-dimethyl-formamide at 150℃; for 48h; Autoclave;	76%

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: 1,4-diazabicyclo[2.2.2]octane hexahydrate

: 5970-45-6
zinc(II) acetate dihydrate

: 10294-56-1
phosphorous acid

: Zn(dabco)0.5(HPO3)

Conditions

Conditions	Yield
In ethanol; water at 160℃; for 216h;	72.1%

...Expand

: 936-52-7
1-(N-morpholino)cyclopent-1-ene

: 10294-56-1
phosphorous acid

: 39198-78-2
N-cyclopentylmorpholine

Conditions

Conditions	Yield
	72%

: 4,4'-bipyridine dihydrate

: vanadia

: 10294-56-1
phosphorous acid

: (VO)4((4,4'-bipyridine)2(HPO3)4

Conditions

Conditions	Yield
With (CH3)4NOH5H2O In water High Pressure; mixt. of V2O5, H3PO3, bipyridine, (CH3)4NOH5H2O and distd. H2O (ratio 1:10:2:8:555) heated at 160°C for 120 h; washed (distd. H2O), filtered, dried in air; elem. anal.;	72%

...Expand

: cobalt(II) chloride hexahydrate

: 1310-73-2
sodium hydroxide

: 10294-56-1
phosphorous acid

: 2Na(1+)*Co(2+)*2HPO3(2-)=Na2Co(HPO3)2

Conditions

Conditions	Yield
With NH3H2O In water High Pressure; Co salt, NaOH, H3PO4 and H2O mixed in molar ratio 2:2.5:2.5:667, treatedwith NH3H2O soln. to pH=7.0, sealed in stainless sleel autoclave, heat ed at 433 K for 5 d; filtered, washed (ethanol), dried at room temp., XRD, elem. anal.;	70%

...Expand

: 761411-41-0
dimethyl 6,6′-([ethane-1,2-diylbis{azanediyl}]bis[methylene])dipicolinate

: 10294-56-1
phosphorous acid

: N,N'-(methylphosphonate)-N,N'-[[6-(methoxycarbonyl)pyridin-2-yl]methyl]-1,2-diaminoethane

Conditions

Conditions	Yield
With 1,3,5-Trioxan; hydrogenchloride Reflux;	70%

: 1258947-79-3
tris(4-(1H-imidazol-1-yl)-phenyl)amine

: 7732-18-5
water

: zinc(II) oxide

: 10294-56-1
phosphorous acid

: [Zn2(HPO3)2(tris(4-(1H-imidazol-1-yl)phenyl)amine)]·2H2O

Conditions

Conditions	Yield
In N,N-dimethyl-formamide at 145℃; for 168h; Autoclave;	70%

...Expand

: 280-57-9
1,4-diaza-bicyclo[2.2.2]octane

: 67-56-1
methanol

: zinc(II) oxide

: 10294-56-1
phosphorous acid

: [N,N'-dimethyl-1,4-diazabicyclo[2,2,2]octane][Zn3(HPO3)4]

Conditions

Conditions	Yield
In water at 160℃; for 168h; Autoclave;	68.7%

...Expand

: 7631-95-0
sodium molybdate dihydrate

: 50446-44-1
1,3,5,-tris(4-carboxyphenyl)benzene

: 2052-49-5
tetra(n-butyl)ammonium hydroxide

: 7646-85-7
zinc(II) chloride

: 10294-56-1
phosphorous acid

: 7439-98-7
molybdenum

: [tetrabutylammonium]3[ε-PMoV8MoVI4O36(OH)4Zn4][benzene tribenzoate]4/3

Conditions

Conditions	Yield
With hydrogenchloride In water at 180℃; for 72h; pH=4.8; Autoclave;	68%

...Expand

: 7631-95-0
sodium molybdate dihydrate

: 5970-45-6
zinc(II) acetate dihydrate

: 13362-78-2
trans-1,2-bis(pyridin-4-yl)ethene

: 4499-86-9
tetrapropylammonium hydroxide

: 10294-56-1
phosphorous acid

: 7439-98-7
molybdenum

: Mo12O40PH3Zn4*3C12H10N2

Conditions

Conditions	Yield
Stage #1: sodium molybdate dihydrate; zinc(II) acetate dihydrate; trans-1,2-bis(pyridin-4-yl)ethene; tetrapropylammonium hydroxide; phosphorous acid; molybdenum In water for 1h; Sealed tube; Stage #2: With hydrogenchloride In water for 0.5h; pH=4.2; Sealed tube; Stage #3: In water at 180℃; for 72h; Sealed tube;	67.11%

...Expand

: gallium(III) sulfate

: 584-08-7
potassium carbonate

: 10294-56-1
phosphorous acid

: 2HO3P(2-)*Ga(3+)*K(1+)

Conditions

Conditions	Yield
In water at 179.84℃; for 72h; High pressure; Autoclave;	67%

...Expand

: rubidium carbonate

: gallium(III) sulfate

: 10294-56-1
phosphorous acid

: 2HO3P(2-)*Ga(3+)*Rb(1+)

Conditions

Conditions	Yield
In water at 179.84℃; for 72h; High pressure; Autoclave;	67%

...Expand

: gallium(III) sulfate

: 506-87-6
ammonium carbonate

: 10294-56-1
phosphorous acid

: H2O3P(1-)*Ga(3+)*H3N*HO3P(2-)

Conditions

Conditions	Yield
In water at 179.84℃; for 72h; High pressure; Autoclave;	67%

...Expand

: zinc(II) nitrate hexahydrate

: 111-86-4
n-Octylamine

: 100-21-0
terephthalic acid

: 7664-39-3
hydrogen fluoride

: 10294-56-1
phosphorous acid

: (HOCA)Zn(1,4-benzenedicarboxylate)0.5(HPO3)

Conditions

Conditions	Yield
In water; N,N-dimethyl-formamide at 150℃; for 48h;	67%

...Expand

: K[Gd(ethylenediaminetetraacetate)(trihydrate)]*5H2O

: 10294-56-1
phosphorous acid

: K3n[Gd(ethylenediaminetetraacetate)(phosphite)]n*7nH2O

Conditions

Conditions	Yield
With potassium hydroxide In water at 70℃; for 168h; pH=7.2;	65%

: 280-57-9
1,4-diaza-bicyclo[2.2.2]octane

: cobalt(II) chloride hexahydrate

: 10294-56-1
phosphorous acid

: Co(2+)*2HO3P(2-)*C6H12N2*2H(1+)

Conditions

Conditions	Yield
Stage #1: 1,4-diaza-bicyclo[2.2.2]octane; cobalt(II) chloride hexahydrate In N,N-dimethyl-formamide for 3h; Stage #2: phosphorous acid In N,N-dimethyl-formamide at 60℃; for 72h; Sealed tube;	65%

...Expand

Phosphorous acid Specification

The Phosphorous acid, with the CAS registry number 10294-56-1, is also known as Caswell No. 663I. Its EINECS registry number is 233-663-1. This chemical's molecular formula is H₃PO₃ and molecular weight is 81.995781. Its IUPAC name is called phosphorous acid. Phosphorous acid is the production of phosphonates which are used in water treatment. Phosphorous acid is also used for preparing phosphite salts, such as potassium phosphite.

Physical properties of Phosphorous acid are: (1)ACD/LogP: -0.76; (2)ACD/LogD (pH 5.5): -4.01; (3)ACD/LogD (pH 7.4): -5.49; (4)ACD/BCF (pH 5.5): 1.00; (5)ACD/BCF (pH 7.4): 1.00; (6)#H bond acceptors: 3; (7)#H bond donors: 3; (8)#Freely Rotating Bonds: 3

Preparation of Phosphorous acid:

HPO(OH)₂ is the product of the hydrolysis of its acid anhydride:
P₄O₆ + 6 H₂O → 4 HPO(OH)₂(An analogous relationship connects H₃PO₄and P₄O₁₀).
On an industrial scale, the acid is prepared by hydrolysis of phosphorus trichloride with water or steam:
PCl₃ + 3 H₂O → HPO(OH)₂ + 3 HCl
Potassium phosphite is also a convenient precursor to phosphorous acid:
K₂HPO₃ + 2 HCl → 2 KCl + H₃PO₃In practice aqueous potassium phosphite is treated with excess hydrochloric acid. By concentrating the solution and precipitations with alcohols, the pure acid can be separated from the salt.

Uses of Phosphorous acid: The most important use of phosphorous acid is the production of phosphonates which are used in water treatment. Phosphorous acid is also used for preparing phosphite salts, such as potassium phosphite.

When you are using this chemical, please be cautious about it as the following:
This chemical may cause damage to health and may destroy living tissue on contact. It is harmful if swallowed which may cause severe burns. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: OP(O)O
(2)InChI: InChI=1S/H3O3P/c1-4(2)3/h1-3H
(3)InChIKey: OJMIONKXNSYLSR-UHFFFAOYSA-N

Product Name

Phosphorous acid

Synthetic route

Phosphorous acid Specification

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