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72061

Sigma-Aldrich

Sodium triphosphate pentabasic

purum p.a., ≥98.0% (T)

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Synonym(s):
Pentasodium tripolyphosphate, Sodium tripolyphosphate pentabasic
Linear Formula:
Na5P3O10
CAS Number:
Molecular Weight:
367.86
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

purum p.a.

Assay

≥98.0% (T)

form

powder

concentration

57-59% (calc. based on P2O5)

pH

9.0-10.0 (25 °C, 1% in H2O)

solubility

water: soluble 148 g/L at 20 °C

anion traces

chloride (Cl-): ≤1000 mg/kg
sulfate (SO42-): ≤250 mg/kg

cation traces

Ca: ≤200 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

[Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O

InChI

1S/5Na.H5O10P3/c;;;;;1-11(2,3)9-13(7,8)10-12(4,5)6/h;;;;;(H,7,8)(H2,1,2,3)(H2,4,5,6)/q5*+1;/p-5

Inchi Key

HWGNBUXHKFFFIH-UHFFFAOYSA-I

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1 of 4

This Item
716427166371501
Sodium phosphate dibasic purum p.a., anhydrous, ≥98.0% (T)

Sigma-Aldrich

71642

Sodium phosphate dibasic

-
Sodium pyrophosphate dibasic BioUltra, ≥99.0% (T)

Sigma-Aldrich

71501

Sodium pyrophosphate dibasic

Premium Grade
assay

≥98.0% (T)

assay

≥98.0% (T)

assay

98.5-102.5%

assay

≥99.0% (T)

form

powder

form

powder

form

crystalline

form

powder

pH

9.0-10.0 (25 °C, 1% in H2O)

pH

8.8-9.4 (25 °C, 50 mg/mL in H2O)

pH

-

pH

3.5-4.5 (20 °C, 0.1 M in H2O, freshly prepared)

solubility

water: soluble 148 g/L at 20 °C

solubility

water: soluble 50 mg/mL at 25 °C

solubility

water: ~35.8 g/L at 20 °C

solubility

H2O: 0.1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤1000 mg/kg, sulfate (SO42-): ≤250 mg/kg

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤1000 mg/kg

anion traces

-

anion traces

chloride (Cl-): ≤50 mg/kg

Application

for the determination of BSB acc. to DIN 38409-H 51

Other Notes

Straight chain phosphates

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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