Food Grade Sodium Citrate
Molecular formula:Na3C6H5O7·2H2O
Molecular Weight:294.1
Quality standards:
Name of index |
GB6782-2009 |
BP2009 |
FCC-V |
USP32 |
E 331 (iii) |
Appearance |
White or light yellow crystal or powder |
White or light yellow crystal or powder |
White or light yellow crystal or powder |
White or light yellow crystal or powder |
Crystalline white powder or colourless crystals |
Content,% |
99.0-100.5 |
99.0-101.0 |
99.0-100.5 |
99.0-100.5 |
≥99.0(on the anhydrous basis) |
Light transmittance,≥% |
95.0 |
Pass test |
- |
- |
- |
Heavy metal(AsPb) ,≤% |
- |
0.001 |
- |
0.001 |
- |
Test for citrate |
- |
- |
- |
- |
Passes test |
Test for sodium |
- |
- |
- |
- |
Passes test |
PH(5 % aqueous solution) |
- |
- |
- |
- |
7.5-9.0 |
Pb ,≤% |
0.0002 |
- |
0.0002 |
- |
0.0002 |
AS ,≤% |
0.0001 |
- |
- |
- |
0.0001 |
Mercury ,≤% |
- |
- |
- |
- |
0.0001 |
Loss on drying,% |
10.0-13.0 |
11.0-13.0 |
10.0-13.0 |
10.0-13.0 |
10.-13.0(180 °C, 18 hours) |
Cl ,≤% |
0.005 |
0.005 |
- |
- |
- |
Sulphate salt,≤% |
0.01 |
0.015 |
- |
- |
- |
Qxalate salt,≤% |
0.01 |
0.03 |
- |
- |
0.01(as oxalic acid, after drying) |
Alkalinity,% |
Pass test |
Pass test |
Pass test |
Pass test |
- |
Readily carbonisable substances |
1.0 |
Pass test |
- |
- |
- |
Fe≤% |
0.0005 |
- |
- |
- |
- |
Calcium salt≤% |
0.02 |
- |
- |
- |
- |
water insoluble |
Pass test |
- |
- |
- |
- |
Pyrogens |
- |
Pass test |
- |
- |
- |