1.06591

tetra-Sodium diphosphate decahydrate

for analysis EMSURE^® ACS,Reag. Ph Eur

• Synonym(s): tetra-Sodium diphosphate decahydrate, tetra-Sodium pyrophosphate, TSPP
• Empirical Formula (Hill Notation): Na₄O₇P₂ · 10H₂O
• CAS Number: 13472-36-1
• Molecular Weight: 446.06
• UNSPSC Code: 12352302
• EC Index Number: 231-767-1
• NACRES: NA.21
• MDL number: MFCD00149200
• Assay: 99.0-103.0% (acidimetric)
• Grade: ACS reagent
• Form: solid

Properties

• grade: ACS reagent
• Quality Segment: 300
• agency: reag. Ph. Eur.
• product line: EMSURE^®
• assay: 99.0-103.0% (acidimetric)
• form: solid
• impurities: ≤0.001% Total nitrogen (N), ≤0.01% Insoluble matter
• pH: 9.5-10.5 (20 °C, 50 g/L in H₂O)
• mp: 988 °C (anhydrous substance)
• density: 1.82 g/cm³ at 20 °C
• bulk density: 650 kg/m³
• anion traces: chloride (Cl^-): ≤0.001%, phosphate (PO₄^3-): ≤0.1%, sulfate (SO₄^2-): ≤0.005%
• cation traces: Fe: ≤0.0005%, K: ≤0.005%, heavy metals (as Pb): ≤0.0005%
• storage temp.: 2-30°C
• SMILES string: [Na+].[Na+].[Na+].[Na+].[P](=O)([O-])([O-])O[P](=O)([O-])[O-].O.O.O.O.O.O.O.O.O.O
• InChI: 1S/4Na.H4O7P2.10H2O/c;;;;1-8(2,3)7-9(4,5)6;;;;;;;;;;/h;;;;(H2,1,2,3)(H2,4,5,6);10*1H2/q4*+1;;;;;;;;;;;/p-4
• InChI key: VZWGHDYJGOMEKT-UHFFFAOYSA-J

Description

Analysis Note

Assay (acidimetric): 99.0 - 103.0 %
Insoluble matter: ≤ 0.01 %
pH-value (5 %; water, 25 °C): 9.5 - 10.5
Chloride (Cl): ≤ 0.001 %
Orthophosphate (PO4): ≤ 0.1 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.005 %
Corresponds to ACS, Reag. Ph Eur

Other Notes

Replaces: SX0740-1

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H302,H318
• pcodes: P264 - P270 - P280 - P301 + P312 - P305 + P351 + P338 - P501
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• Storage Class: 11 - Combustible Solids