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Sodium citrate tribasic dihydrate

Name: Sodium citrate tribasic dihydrate
Brand: SIAL

purum p.a., ≥99.0% (NT)

Synonym(s):

Citric acid trisodium salt dihydrate, Trisodium citrate dihydrate

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About This Item

Linear Formula:

HOC(COONa)(CH₂COONa)₂ · 2H₂O

CAS Number:

6132-04-3

Molecular Weight:

294.10

UNSPSC Code:

12161700

NACRES:

NA.25

PubChem Substance ID:

329763247

EC Number:

200-675-3

Beilstein/REAXYS Number:

6104939

MDL number:

MFCD00150031

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Properties

grade

purum p.a.

Quality Segment

100

assay

≥99.0% (NT)

form

crystals

pH

7.0-9.0 (25 °C, 50 mg/mL in H₂O)

mp

>300 °C (lit.)

solubility

water: very soluble 24.9 g/L at 20 °C

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

Ca: ≤50 mg/kg, Cd: ≤50 mg/kg, Co: ≤50 mg/kg, Cu: ≤50 mg/kg, Fe: ≤50 mg/kg, K: ≤100 mg/kg, Ni: ≤50 mg/kg, Pb: ≤50 mg/kg, Zn: ≤50 mg/kg

SMILES string

O.O.[Na+].[Na+].[Na+].OC(CC([O-])=O)(CC([O-])=O)C([O-])=O

InChI

1S/C6H8O7.3Na.2H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;2*1H2/q;3*+1;;/p-3

InChI key

NLJMYIDDQXHKNR-UHFFFAOYSA-K

Description

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This Item	71405	S4641	C8532
Sigma-Aldrich 71406 Sodium citrate tribasic dihydrate	Sigma-Aldrich 71405 Sodium citrate tribasic dihydrate	Sigma-Aldrich S4641 Sodium citrate tribasic dihydrate	Sigma-Aldrich C8532 Sodium citrate tribasic dihydrate
assay ≥99.0% (NT)	assay ≥99.0% (NT)	assay ≥99.0%	assay ≥99%
grade purum p.a.	grade -	grade -	grade -
Quality Level 100	Quality Level 200	Quality Level 200	Quality Level 200
form crystals	form powder	form -	form powder or crystals
pH 7.0-9.0 (25 °C, 50 mg/mL in H₂O)	pH 7.0-9.0 (25 °C, 50 mg/mL in H₂O)	pH 7.0-9.0 (25 °C, 5% in solution)	pH 7.5-9 (25 °C, 29.4 g/L)
solubility water: very soluble 24.9 g/L at 20 °C	solubility water: soluble 29.4 g/L at 20 °C	solubility water: soluble 29.4 g/L at 20 °C (completely)	solubility water: soluble 100 mg/mL

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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