tri-Sodium citrate dihydrate for analysis EMSURE®

Product Information

CAS number6132-04-3
EC number200-675-3
GradeACS,ISO,Reag. Ph Eur
Hill FormulaC₆H₅Na₃O₇ * 2 H₂O
Molar Mass294.10 g/mol
HS Code2918 15 00
Structure formula ImageStructure formula Image
Quality LevelMQ300

Specification

Assay (perchloric acid titration)99.0 – 101.0 %
Assay (Perchloric acid titration, calc. on anhydrous substance)99.0 – 101.0 %
Identitypasses test
Appearance of solutionpasses test
Insoluble matter≤ 0.005 %
pH-value (5 %; water; 25 °C)7.5 – 9.0
Acidity or alkalinitypasses test
Chloride (Cl)≤ 0.001 %
Oxalate (C₂O₄)≤ 0.0300 %
Phosphate (PO₄)≤ 0.002 %
Sulfate (SO₄)≤ 0.004 %
Total nitrogen (N)≤ 0.001 %
Heavy metals (ACS)≤ 0.0005 %
Heavy metals (as Pb)≤ 0.0005 %
Ca (Calcium)≤ 0.005 %
Fe (Iron)≤ 0.0005 %
NH₃ (Ammonia)≤ 0.003 %
Readily carbonisable substancepasses test
Water11.0 – 13.0 %
Corresponds to ACS,ISO,Reag. Ph Eur

Safety Information

Storage class10 – 13 Other liquids and solids
WGKWGK 1 slightly hazardous to water
Disposal3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.