Food Grade 99% Purity Zinc Sulfate Factory Price

Min.Order: 1

Product origin: Nanjing, Jiangsu, China

Infringement complaint:

Complaint

US$ 680

Description

1,Chemical Name: Zinc sulfate

2,Molecular Formula : ZnSO₄.H₂O, ZnSO₄.7H₂O

3,Molecular Weight: 179.48(Monohydrate), 287.54(Heptahydrate)

4,CAS: 7446-19-7(H₂O);7446-20-0 (7H₂O)

5,Character: It is colorless or white crystalline powder, odorlessness. Efflorescence in air. Acid hydrometer is 1.957(25/4ºC) to litmus. Melting point is 100ºC. It's soluble in water and glycerol, insoluble in ethanol and light toxicity, lose crystal water in 280ºC.

6,Usage: It is used as food additives, animal feed, printing and dyeing, timber preservative.Used as analytical reagent.

7,Packing: It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.

8,Storage and Transport: It should be stored in a dry and ventilative warehouse; kept away form water and moisture during transport; unloaded with care, so as to avoid damage to bags. Furthermore, it should be stored separately from poisonous substances.

Quality indicators		Specification		GB25579-2010	FCC,1996
content w/%	ZnSO₄.H₂O	Content	ZnSO₄.H₂O	99.0-100.5	98.0-100.5
	ZnSO₄.7H₂O		ZnSO₄.7H₂O	99.0-108.7	99.0-108.7
Arsenic (As), mg/kg ≤		As		0.0003	--
Alkali and alkaline earth metal salt sw/% ≤		Alkali metal		0.50	0.5
Acidity		PH		tested	normal
Selenium(Se), mg/kg ≤		Se		0.003	0.003
Mercury (Hg), mg/kg ≤		Hg		0.0001	0.0005
Lead (Pb), mg/kg ≤		Pb		0.0004	0.001
Cadmium (Cd), mg/kg ≤		Cd		0.0002	0.0005