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Merck
CN

72061

Sodium triphosphate pentabasic

purum p.a., ≥98.0% (T)

Synonym(s):

Pentasodium tripolyphosphate, Sodium tripolyphosphate pentabasic

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About This Item

Linear Formula:
Na5P3O10
CAS Number:
Molecular Weight:
367.86
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-838-7
MDL number:
Assay:
≥98.0% (T)
Form:
powder
Solubility:
water: soluble 148 g/L at 20 °C
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grade

purum p.a.

Quality Segment

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-): ≤500 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

Application

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

Other Notes

Straight chain phosphates


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flash_point_f

Not applicable

flash_point_c

Not applicable

Storage Class

13 - Non Combustible Solids



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