Page 305 - Catalogue 2015

Tri-Sodium citrate dihydrate

Synonym: Citric acid trisodium salt dihydrate, Sodium citrate tribasic dihydrate

CAS [6132-04-3]; EC 200-675-3; CÃHÂOÎNaÀx2H¿O; M 294.10

Cat. No. Tri-Sodium citrate dihydrate
191205 AR

Appearance White crystalline powder Iron (Fe) max. 0.0005%
Assay (T) 99-101%w/w Sulfate (SO4) max. 0.005%
Calcium (Ca) max. 0.005% Water (KF) 11-13%w/w
Chloride (Cl) max. 0.003% pH (5% in water) 7-9
Heavy metals (as Pb) max. 0.0005% Insoluble matter max. 0.005%

Cat. No. Tri-Sodium citrate dihydrate
191264 Meets ACS/EP/BP/USP spec.

Identification A Passes test for sodium Oxalate (C2O4) max. 0.03%
Identification B Passes test for citrate Heavy metals (as Pb) max. 0.001%
Identification C Passes USP test Sulfate (SO4) max. 0.015%
Assay (T) 99.0-100.5%w/w Carbonisable substances Passes EP/BP test
Appearance of solution Solution S is clear & Tartarate Passes USP test
colorless Water (KF) 11.0-13.0%w/w
Alkalinity Passes USP test Residual solvents Meets the requirements
Acidity or Alkalinity Passes EP/BP test
Chloride (Cl) max. 0.005%

Cat. No. Tri-Sodium citrate dihydrate
191203 Meets EP/BP spec.

Identification A Passes EP/BP test Chloride (Cl) max. 0.005%
Identification B Passes EP/BP test Oxalate (C2O4) max. 0.03%
Appearance White crystalline powder Heavy metals (as Pb) max. 0.001%
Appearance of solution Solution S is clear & Sulfate (SO4) max. 0.015%
colorless Water (KF) 11-13%w/w
Acidity or Alkalinity Passes EP/BP test Carbonisable substances Passes EP/BP test
Assay (T) 99.0-101.0%w/w

Cat. No. Tri-Sodium citrate dihydrate
191236 Meets USP spec.

Identification A Passes USP test Heavy metals (as Pb) max. 0.001%
Identification B Passes USP test Tartarate Passes USP test
Appearance White crystalline powder Water (KF) 10.0-13.0%w/w
Assay (T) 99.0-100.5%w/w Residual solvents Meets the requirements

Cat. No. Tri-Sodium citrate dihydrate
191223 Molecular biology

Application: Commonly used in the preparation of buffers for Northern and Southern hybridizations.

Appearance White crystalline powder Water (KF) 11-13%w/w
Chloride (Cl) max. 0.005% Assay (T) 99-101%w/w
Iron (Fe) max. 0.0005% A260nm (0.1M) max. 0.02AU
Sulfate (SO4) max. 0.015% DNase activity Not detected
Heavy metals (as Pb) max. 0.001% RNase activity Not detected
pH (5% in water) 7-9 Protease activity Not detected