Potassium metabisulfite

Model:	GB25570-2010
Brand:	ZIBO CHANGCHENG CHEMICAL
Origin:	Made In China
Category:	Chemicals / Inorganic Chemical Materials / Alkali
Label:	Potassium metabisulf
Price:	US $2060 / MT
Min. Order:	0.5 MT

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Member Information

ZIBO CHANGCHENG CHEMICAL FACTORY

Free MemberShan Dong - China

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Last Online:27 Jun, 2013

Product Description

executive standard:european food grade potassium metabisulfite E224

molecular formula:K₂S₂O₅=222.326

molecular weight:222.33

CAS Number: 16731-55-8

Product characteristics: The Product was colorless crystal or white crystalline powder with the relative density of 2.34 .The melting point was 150-190 ℃ (decomposition). The product had a flavor of sulfur dioxide and soluble in water with acidic aqueous solution, it was not soluble in ethanol. Sulfur dioxide was released from acidic solution and oxidized to sulfate in the air.

Technical index

Test item	Unit	Specification	Test method
K₂S₂O₅	g/100g	≥97.2	Acc.Fcc IV p.322
SO₂	g/100g	≥56.0	calculation
K₂S₂O₃	g/100g	≦ 0.1	ISO 3629-1996(E)
Na	g/100g	≦ 2	AAS
Cl	g/kg	≦ 0.5	IC
pH-value(10%solution)	-	3.8-4.8	RCA/Q-S-066
heavy metal（measured by Pb）	mg/kg	≦10	AAS
As	mg/kg	≦ 1	AAS
Cu	mg/kg	≦1	ICP-AES
Fe	mg/kg	≦5	ICP-AES
Hg	mg/kg	≦0.1	AAS(cold vapour)
Pb	mg/kg	≦1	ICP-AES
Se	mg/kg	≦1	AAS
Zn	mg/kg	≦ 1	ICP-AES
K₂SO₃ +K₂SO₄	mg/kg	excess material	calculation

Product usage

the product was used for the preparation of photographic developing solution, which was also used as food bleaching agents, preservatives, antioxidants .In addition, it could be used to retain freshness of wine, fruit juice, beer clarifying agent, fruits and vegetables, meat , grapes, as well as the non-cyanide silver plating.

Product package: 25 kg per bag, composite bag lined with plastic bag, or by user’s request.

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ZIBO CHANGCHENG CHEMICAL FACTORY

xiaodian village,baita town. boshan district

Phone:: 86-533-4689683

Fax:: 86-533-4689683

Contact:: Wang Gang (manager)

Mobile:: 13573362752

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