CAS 7681-57-4 White or Yellow Crystalline Powder Food Additive Preservative Sodium Bicarbonate

1. Chemical name: Sodium metabisulphite
2. Molecular formula: Na2 S2 O5
3. Molecular weight: 190.13 g/mole
4. CAS.NO.: 7681-57-4
5. Character: 
it is white or yellowish crystallize powder, Odour: Sulfur dioxide. the relative density is 1.4, Molecular Weight: 190.13g/mole,
PH value 4~4.6. Incompatible with acids and oxidants. Easy oxidized on exposure to air and moisture, Release sulfur dioxide
continuously in open air. easily soluble in water
6. Storage: seal in the cool place.
7. Shelf life: 1 years
8. Certificate:  ISO 9001 certificate / FDA / CCIC / SGS annual report
9. Factory capacity: 50000tons per year
10. Usage: 
1). the main function is as an oxidant.   
2). In industry, it is mainly used for printing and dyeing, organic synthesis, printing, tanning, pharmaceuticals, etc. 
3). In food processing it is mainly used as a preservative, bleach, and loosening agent. 
4). In the brewing industry it is commonly used as a preservative; 
5). In the textile industry it is as a dechlorination agent for cotton fabric after bleaching.
11.  Package:  
1. 25kg or 50kg pp bag or 1000kg/1100kg/1200kg/1250kg big bag, 25MT per 20FCL with or without pallet.
2. NEWSKY design package or OEM various packings according to customers design.
12. Specification:

ITEMS	UNIT	SPECIFICATION
Purity	%min	97
As	(ppm) max	2
Fe	(ppm) max	50
Pb	(ppm) max	10
PH		4-5
Water insolubles	(%)max	0.05

FAQS
1. How long can I get your reply?
A: Within 4-8 hours.
2. May I get some samples?
A: Free sample can be sent on your request but express charges are on your account.
3. Is this price on the page correct?
A: The listed price is only for reference, for latest price, please contact us directly.
4. What is your lead time?
A: within 20days normally after order settled and it depneds on your quantity and our stock.
5. What is your payment term?
A: T/T & D/P & L/C accepted (long term within 90days)

COMPANY INFORMATIONS
We are specialized in producing and exporting high quality chemicals, our predecessor is Changsha Yili Chemical factory which is established in 1998 and Chansha Newsky Chemical Co.,Ltd. In the past decade, we immerse in the field of animal feed additives, agriculture fertilizer and industrial chemicals, our products had exported to dozens of countries and regiones.
In 2008 Newsky has been certified to FAMIQS, ISO, license of producing and exporting feedstuff additives respectively. Depending on the advanced management system and rich experience team, we are able to provide the best service and products to our customers.
Please contact us no hesitation to get the latest price and CoA. Looking forward to be your reliable partner for long time! 

OUR ADVANTAGES 
- Specializing in chemicals from decade years.
- Consistent Superior Quality and Reliability.
- OEM various packings according to customers design.
- Created long term cooperation with more than 100 customers overseas. 
- Exporting over 50, 000 tons of Chemical products annually.