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SODIUM ACID PYROPHOSPHATE

2016/6/12 Read：563

1, molecular formula: Na2H2P2O7
2, molecular weight: 221.94
3, Specificity: white powder, relative density of 1.86, hygroscopic, soluble in water, insoluble in ethanol, aqueous solution is acidic,The PH is 3.7-5.0 in 1% water solution,it can form chelate with Fe2 +, Mg2 +., used as a leavening agent can contain the right amount of aluminum salt and / or calcium salt to control the rate of the reaction.
4, Usage:Used as buffer,leavening agent, modifying agent, emulsifier, nutritional agent, preservatives and other canned effects in food.
5, Packing: Packed with polyethylene plastic bag as liner, and woven bag as the outer layer. The net weight of each bag is 25kg.

指标名称	Name of index		FCC-V	E450(i)
外观	Description		White powder or grains
	Identification		Pass test
含量	Assay	%	93.0-100.5>		≥95.0
pH值 1%水溶液	H of a 1 % solution		--	3.7-5.0>
P2O5含量(干基计)	P2O5 Content(ignited basis)	%	--	63.0-64.5
水不溶物	Water insoluble	≤%	1	1
氟	Fluoride	≤%	0.005	0.001(expressed as fluorine)
干燥失重	Loss on drying	≤%	--	0.5(105℃,4h)
砷	As	≤mg/kg	3	1
镉	Cadmium	≤mg/kg	--	1
汞	Mercury	≤mg/kg	--	1
铅	Lead	≤mg/kg	2	1
铝	Aluminium	≤mg/kg	--	200