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10039-56-2

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Basic Information
CAS No.: 10039-56-2
Name: Sodium hypophosphite monohydrate
Article Data: 35
Molecular Structure:
Molecular Structure of 10039-56-2 (Sodium hypophosphite monohydrate)
Formula: NaH2PO2.H2O
Molecular Weight: 87.9782
Synonyms: Phosphinicacid, sodium salt, monohydrate (8CI,9CI);Phosphonous acid, monosodium salt,monohydrate;Phosphinic acid, sodiumsalt, hydrate (1:1:1);Sodium phosphinate hydrate;Sodium hypophosphite;
EINECS: 231-669-9
Density: 0.8 g/cm3 (20oC)
Melting Point: 90 °C
Solubility: 1000 g/L (20 °C) in water
Appearance: white crystals
Safety: 22-24/25
PSA: 59.17000
LogP: 0.02390
Synthetic route
7758-19-2

sodium chlorite

phosphorous

A

10039-56-2

sodium hypophosphite

B

sodium phosphite

C

sodium subphosphate

D

5Na(1+)*P3O8(5-)=Na5P3O8

E

sodium phosphate

Conditions
ConditionsYield
In water
7758-19-2

sodium chlorite

phosphorous

A

10039-56-2

sodium hypophosphite

B

sodium phosphite

C

sodium subphosphate

D

sodium phosphate

Conditions
ConditionsYield
In water

sodium phosphide

A

10039-56-2

sodium hypophosphite

B

sodium phosphite

C

1333-74-0

hydrogen

D

7803-51-2

phosphan

E

1310-73-2

sodium hydroxide

Conditions
ConditionsYield
In water reaction of Na3P with H2O;;

Na4P2

A

10039-56-2

sodium hypophosphite

B

12185-09-0

diphosphane

C

sodium phosphite

D

1333-74-0

hydrogen

E

1310-73-2

sodium hydroxide

Conditions
ConditionsYield
In water reaction by prepn. of PH3;;
10049-21-5

sodium dihydrogenphosphate

10039-56-2

sodium hypophosphite

Conditions
ConditionsYield
In neat (no solvent) other Radiation; on irradiation with neutrons at -79°C for 30min (2*E+12 n/cm*cm*s);; in mixture with other products;;
In neat (no solvent) other Radiation; on irradiation with neutrons at -79°C for 30min (2*E+12 n/cm*cm*s);; in mixture with other products;;
12185-10-3

phosphorous

A

10039-56-2

sodium hypophosphite

B

sodium phosphite

Conditions
ConditionsYield
With sodium hydroxide; water 100-250°C; product depending on temp.;
12185-10-3

phosphorous

10039-56-2

sodium hypophosphite

Conditions
ConditionsYield
With sodium hydroxide; water 100°C; very slow reaction;
12185-10-3

phosphorous

1310-73-2

sodium hydroxide

A

10039-56-2

sodium hypophosphite

B

sodium phosphite

C

1333-74-0

hydrogen

D

7803-51-2

phosphan

Conditions
ConditionsYield
In sodium hydroxide on heating;;
10039-56-2

sodium hypophosphite monohydrate

A

10039-56-2

sodium hypophosphite

B

7732-18-5

water

Conditions
ConditionsYield
In neat (no solvent) quantitative dehydration in vac. over P2O5 at 100°C;;
In neat (no solvent) quantitative dehydration in vac. over P2O5 at 100°C;;

phoshorus

10039-56-2

sodium hypophosphite

Conditions
ConditionsYield
With bromine In carbon disulfide excess of Br2;
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Chemistry

Molecule structure of Sodium hypophosphite monohydrate (CAS NO.10039-56-2):

Molecular Weight: 105.9935  g/mol
Molecular Formula: NaH2PO2.H2O
Melting Point: 90 °C
Water Solubility: 1000 g/L (20 °C)
Sensitive: hygroscopic
H-Bond Donor: 1
H-Bond Acceptor: 3
Exact Mass: 103.963925
MonoIsotopic Mass: 103.963925
Topological Polar Surface Area: 41.1
Heavy Atom Count: 5 
Canonical SMILES: O.[O-]P=O.[Na+]
InChI: InChI=1S/Na.HO2P.H2O/c;1-3-2;/h;(H,1,2);1H2/q+1;;/p-1
InChIKey: ACUGTEHQOFWBES-UHFFFAOYSA-M
EINECS: 231-669-9
Product Categories: Inorganic Salts;Synthetic Reagents;Analytical Reagents for General Use;Puriss p.a.;Q-S, Puriss p.a.

Uses

 Sodium hypophosphite monohydrate (CAS NO.10039-56-2) is mainly used for electroless nickel plating. A durable nickel-phosphorus film can coat objects with irregular surfaces with this method, and can widely be used ionics, aviation and the petroleum field. It is also used as a food additive.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 oral 7640mg/kg (7640mg/kg)   "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972Vol. -, Pg. 16, 1972.

Safety Profile

Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3
RTECS: SZ5640000
F: 3

Specification

 Sodium hypophosphite monohydrate (CAS NO.10039-56-2) is also named as Fosfornan sodny ; Fosfornan sodny [Czech] ; Sodium phosphinate hydrate ; Phosphinic acid, sodium salt, monohydrate . Sodium hypophosphite monohydrate (CAS NO.10039-56-2) is odorless white crystals at room temperature. It is soluble in water, and easily absorbs moisture from the air. Sodium hypophosphite should be kept in a cool, dry place, isolated from oxidizing materials. It produces toxic phosphine gas when heated, causing irritation to the respiratory tract.