Sodium Citrate

CAS No.: 68-04-2
Molecular Formula: C₆H₅Na₃O₇
Molecular Weight: 258.07

Description:
Sodium citrate is a sodium salt of citric acid, widely used as a buffering agent, emulsifier, and preservative in food and pharmaceuticals.

Main Applications:
Used in soft drinks, dairy products, pharmaceuticals, and as an anticoagulant in blood storage.

Snowhite Sodium Citrate products are classified into:

• Sodium Citrate tech grade
• Sodium Citrate food grade
• Sodium Citrate feed grade

Typical Properties:

Appearance:	White crystalline powder
Assay:	≥99%
Light Transmittance (%)	≧95.0
Moisture (%)	10.0-13.0
Readily Carbonisablle Substance	≦1.0
Sulphate (%)	≦0.01
Chloride (%)	≦0.005
Oxalate (%)	≦0.01
Calcium salt (%)	≦0.02
Iron salt (mg/kg)	≦5
Arsenic salt(mg/kg)	≦1
Lead (mg/kg)	≦2

 

Sodium Citrate tech grade

Test Item	Unit	Specification
Purity (Sodium Citrate, by Titration)	%	≥99.0
Appearance	-	White crystalline powder, no visible mechanical impurities
Color (Pt-Co Scale, 50% Solution)	No.	≤10
pH Value (5% Solution)	-	7.5~9.0
Water Content	%	≤0.5
Sulfate Content	%	≤0.03
Chloride Content	%	≤0.01
Heavy Metals (as Pb)	mg/kg	≤20
Arsenic Content	mg/kg	≤5
Flash Point (Closed Cup)	℃	≥100

 

Sodium Citrate food grade 

Test Item	Unit	Specification
Purity (Sodium Citrate, by Titration)	%	≥99.0
Appearance	-	White crystalline powder, no visible mechanical impurities, no foreign odor
Color (Pt-Co Scale, 50% Solution)	No.	≤10
pH Value (5% Solution)	-	7.5~9.0
Water Content	%	≤0.5
Sulfate Content	%	≤0.03
Chloride Content	%	≤0.01
Lead (Pb)	mg/kg	≤2
Arsenic (As)	mg/kg	≤0.5
Cadmium (Cd)	mg/kg	≤0.1
Mercury (Hg)	mg/kg	≤0.1
Flash Point (Closed Cup)	℃	≥100

 

Sodium Citrate feed grade 

Test Item	Unit	Specification
Purity (Sodium Citrate, by Titration)	%	≥99.0
Appearance	-	White crystalline powder, no visible mechanical impurities, no foreign odor
Color (Pt-Co Scale, 50% Solution)	No.	≤10
pH Value (5% Solution)	-	7.5~9.0
Water Content	%	≤0.5
Sulfate Content	%	≤0.03
Chloride Content	%	≤0.01
Lead (Pb)	mg/kg	≤5
Arsenic (As)	mg/kg	≤2
Cadmium (Cd)	mg/kg	≤0.5
Mercury (Hg)	mg/kg	≤0.1
Fluoride (as F)	mg/kg	≤50
Total Plate Count	CFU/g	≤10000
Molds and Yeasts	CFU/g	≤100
Flash Point (Closed Cup)	℃	≥100