China Direct Supply Zinc Sulphate for Agricultural Use Fertilizer Zinc Sulphate

Product Description /Product Description "Chemical name:" Zinc sulfate "
Molecular formula:" ZnSO4.H2O, ZnSO4.7H2O "Molecular weight:" 179.49 (monohydrate), 287.58 (heptahydrate)
CASNO: 7446-19-7 (monohydrate); 7446-20-0 (heptahydrate)
Properties:Colorless crystal, small needle-like or granular crystal powder, odorless, will be weathered in the air. The solution is acidic to litmus, specific gravity 1.957 (25/4°C), melting point 100°C, loses 7H2O at 280°C, Soluble in water and glycerin, insoluble in alcohol, low toxicity.
Packing: lined with polyethylene plastic bag, outer plastic woven bag, 25Kg per bag. "Storage and transportation" should be stored in a dry, ventilated and clean warehouse, lightly packed, protected from moisture and heat, and protected from rain and moisture during transportation, and should be stacked separately from toxic substances.
Food supplements, animal feed, mordants, wood preservatives, analytical reagents
 

Quality Index		GB25579-2010	FCC,1996
contentw/%	ZnSO4.H2O	99.0-100.5	98.0-100.5
	ZnSO4.H2O	99.0-108.7	99.0-108.7
As,mg/kg ≤		0.0003
Alkali and alkaline earth metal salts w/%≤		0.50	0.5
acidity		Pass the test	normal
Se,mg/kg ≤		0.003	0.003
Hg,mg/kg ≤		0.0001	0.0005
Pb,mg/kg ≤		0.0004	0.001
Cd,mg/kg  ≤		0.0002	0.0005

  

 

 

 

 

Do you have a factory?

Yes, we have factory which is specializing in manufacturing All chemicals

 

Where does your factory locate at?

Our factory is located at Dalian

 

What is your lead time?

It depends on the order quantity and the season you place the order.

 

Can I get a sample to check quality ? is there any fee for it ?

You can get our free samples, but you need to pay the freight

 

How can l confirm for proceed the bulk? What's the guarantee of product quality?

Always a pre-production sample for your approval before mass production;

Always final lnspection before ship.

 

What's your payment term ?

TrT, Western Union, MoneyGram, and Paypal,etc.This is negotiable.

 

What is the shipping method?

lt could be shipped by sea,by air or by express (EMS,UPS,DHL,TNT,FEDEX and ect).