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Sodium metaphosphate (NaPO3)
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Name

Sodium metaphosphate (NaPO3)

 EINECS 233-782-9
CAS No. 10361-03-2 Density 2.181 g/cm3
PSA 91.34000 LogP 0.50480
Solubility N/A Melting Point 600 °C
Formula NaO3P Boiling Point N/A
Molecular Weight 101.962 Flash Point N/A
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 10361-03-2 (Sodium metaphosphate) Hazard Symbols N/A
Synonyms

METAPHOSPHORIC ACID , SODIUM SALT;METAPHOSPHORIC ACID(HPO3), SODIUM SALT (1:1);sporix;SODIUM M-PHOSPHATE;METAPHOSPHORIC ACID SODIUM SALT;GRAHAM'S SALT;SODIUM PHOSPHATE;ISMP;metafos;SODIUM-M-PHOSPHATE MONOHYDRATE;sodium hypophosphate;Natriummetaphosphat;maddrellsalt;SODIUM POLYPHOSPHATE;

Article Data 13

Sodium metaphosphate (NaPO3) Synthetic route

silver(I) bromide

sodium phosphite

A

10361-03-2

sodium hypophosphate

B

7440-22-4

silver

Conditions
ConditionsYield
byproducts: NaBr, H2; heating AgBr in excess to 380°C in a sealed glass tube;

3Na(1+)*NH4(1+)*P4O12(4-)*10H2O=Na3NH4P4O12*10H2O

A

10361-03-2

sodium hypophosphate

B

7664-41-7

ammonia

Conditions
ConditionsYield
In neat (no solvent) heating for a long period;
In neat (no solvent) heating for a long period;

Na(1+)*3NH4(1+)*P4O12(4-)*12H2O=Na(NH4)3P4O12*12H2O

A

10361-03-2

sodium hypophosphate

B

7664-41-7

ammonia

Conditions
ConditionsYield
In neat (no solvent) prolonged heating;
In neat (no solvent) prolonged heating;

4Na(1+)*P4O12(4-)*NaOH=Na4P4O12*NaOH

10361-03-2

sodium hypophosphate

Conditions
ConditionsYield
In neat (no solvent) Kinetics; placed in a platinum crucible in a furnace, temp. range 300-375°C;

4Na(1+)*P4O12(4-)*H3PO4=Na4P4O12*H3PO4

10361-03-2

sodium hypophosphate

Conditions
ConditionsYield
In neat (no solvent) Kinetics; placed in a platinum crucible in a furnace, temp. range 300-375°C;

sodium cyclotetrapolyphosphate tetrahydrate

10361-03-2

sodium hypophosphate

Conditions
ConditionsYield
In neat (no solvent) Kinetics; placed in a platinum crucible in a furnace, temp. range 300-375°C;
10049-21-5

sodium dihydrogenphosphate

10361-03-2

sodium hypophosphate

Conditions
ConditionsYield
In neat (no solvent) repeated fusion of NaH2PO4 and cooling the latter up to 500°C in the course of 2 d, removing of residual water;
10049-21-5

sodium dihydrogen phosphate monohydrate

10361-03-2

sodium hypophosphate

Conditions
ConditionsYield
byproducts: H2O; heating (300°C, 0.5 h and 500°C, 2 h);

Sodium trimetaphosphate

7440-44-0

pyrographite

A

10361-03-2

sodium hypophosphate

B

12185-10-3

phosphorous

Conditions
ConditionsYield
In neat (no solvent) Kinetics; byproducts: CO; Ar atmosphere; Na3P3O9 placed on graphite boat in electric furnace at 1000 or1100°C; gas phase condensed in receivers; elem., IR and X-ray diffraction anal.;

sodium tetrametaphosphate

10361-03-2

sodium hypophosphate

Conditions
ConditionsYield
In neat (no solvent) Kinetics; placed in a platinum crucible in a furnace, temp. range 300-375°C;

Sodium metaphosphate (NaPO3) Consensus Reports

Sodium metaphosphate(10361-03-2) is reported in EPA TSCA Inventory.

Sodium metaphosphate (NaPO3) Specification

The Sodium metaphosphate (NaPO3), also known as Metaphosphoric acid (HPO3), sodium salt, is an organic compound with the formula NaO3P. It belongs to the product categories of Inorganic & Organic Chemicals; Inorganics. Its EINECS registry number is 233-782-9. With the CAS registry number 10361-03-2, its IUPAC name is [O-]P(=O)=O.[Na+].

Physical properties of Sodium metaphosphate (NaPO3): (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 3; (3)Rotatable Bond Count: 0; (4)Exact Mass: 101.948275; (5)MonoIsotopic Mass: 101.948275; (6)Topological Polar Surface Area: 57.2; (7)Heavy Atom Count: 5; (8)Formal Charge: 0; (9)Complexity: 49.8; (10)Isotope Atom Count: 0; (11)Defined Atom StereoCenter Count: 0; (12)Undefined Atom StereoCenter Count: 0; (13)Defined Bond StereoCenter Count: 0; (14)Undefined Bond StereoCenter Count: 0; (15)Covalently-Bonded Unit Count: 2.

You can still convert the following datas into molecular structure:
(1)SMILES: [Na+].[O-]P(=O)=O
(2)InChI: InChI=1/Na.HO3P/c;1-4(2)3/h;(H,1,2,3)/q+1;/p-1
(3)InChIKey: AQMNWCRSESPIJM-REWHXWOFAF

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 830mg/kg (830mg/kg) KIDNEY, URETER, AND BLADDER: "CHANGES IN TUBULES (INCLUDING ACUTE RENAL FAILURE, ACUTE TUBULAR NECROSIS)" Revue d'Epidemiologie, Medecine Sociale et Sante Publique. Vol. 10, Pg. 391, 1962.

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