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Citrates

Sodium Citrate

Chemical Name:

Dihydrous trisodium 2-hydroxy propane-1,2,3-tricarboxylate sodium citrate.

Molecular Formula:

Na₃C₆H₅O₇·2H₂O

Molecular Weight:

249.10

Properties:

Colourless or white crystalline granule or crystalline powder, odourless;taste salty and cold;soluble in water,difficulity in ethanol;slightly deliquescence in moist air, PH7.6-8.6 in 5% aqueous solution,when heated to 150℃,it may lose crystal water.

Quality standard:

GB1886.25-2016 , FCC V , E331(iii) , BP

Application:

In food processing industry,it is used as buffer,chelate agent,nutrient additive,emulsifier,flavor for yoghurt. In pharmaceutical industry,it is used as anticoagulant and as binder in cheese and minced meat,acid coagulant in jellies and jam,emulsifier and stabilizer in cheese and ice cream.

Packing:

It is packed with polyethylene bag as liner and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.

Storage and transport:

Kept in tightly-closed containers, it should be stored in a dry and ventilative warehouse, kept away from moisture and hot. Furthermore, it should be separately from poisonous substances. Handled with care,so as to avoid damaging to bags.

Index item	GB1886.25-2016	BP93/98	E331(iii)
Appearance	--	Colorless or white crystal or crystalline
Content,%	99.0-100.5t	99.0-101.0	99.0-101.0
Acidity and alkalinity	up to specification	Accord with the test	Accord with the test
Sulfate,≤%	0.01	0.015	0.015
Heavy metal(in lead),≤%	--	0.001	0.0005
Oxalate,≤%	0.01	0.03	0.01
Readily carbonizable substance	1.0%	Accord with the test	Accord with the test
Chloride,≤%	0.005	0.005	0.005
Loss on drying,%	10.0-13.0	11.0-13.0	11.0-13.0
PH value(5% transparent solvent)	--	--	7.5-9
Arsenic,≤ppm	1	--	1
Lead,≤ppm	2	--	1
Mercury,≤ppm	--	--	1
Clarity	--	–	Accord with the test
Light transmittance	96.0
Ferric salt≤mg/kg	5
Calcium salt ≤mg/kg	0.02
Water insolubles	passed soluble film test

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