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White Dry Powder Sodium Metabisulfite Food Additive Molecular Weight 190.10

Categories Sodium Metabisulfite Food Additive
Brand Name: Kemsky
Model Number: smbs -a1
Certification: ISO 9001,sgs
Place of Origin: Hunan
MOQ: 1 metric ton
Price: usd 300 per metric ton
Payment Terms: T/T , L/C
Supply Ability: 3000 tons per month
Delivery Time: 5-8 days
Packaging Details: 25 kgs bag,1000 kgs big bag
name: for food use sodium metabisulfite
other name: for food use sodium pyrosulphite
situation: dry powder
shelf life: 12 months/365 days
grade: food grade, food preservative
usage: food additive preservative, antioxidant,antistaling agent,
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White Dry Powder Sodium Metabisulfite Food Additive Molecular Weight 190.10



1. MOQ?


2. Package?

→ Packing in 25kg, 50kg, 1000kg pp woven bag with plastic lining. Also can be customized.

3. Purity?

→ 96%, 97%, 98%.

4. Safety for food grade?

→ Yes, we have special certificate for food use.

5. Delivery?

→ 12-15days after order confirmed.


Name: Sodium Pyrosulfite

Appearance: white or light yellow crystal powder

Grade: Food Grade/Industry Grade

Type: Emulsifiers, Enzyme Preparations, Flavoring

Molecular formula: Na2S2O5

CAS No. : 7681-57-4

EINECS : 231-673-0

HS Code: 28311020

Certificate: SGS/Health certificate/ISO certificate

Other names: Sodium Metabisulphite

ItemChinese standardCompany standard
Main content(Na2S2O5)≥96.5≥97.5
Fe(As content Fe)≤0.003≤0.0015
ClarityPass testClear
Heavy metal content (Pb)≤0.0005≤0.0002
Arsenic content (As)≤0.0001≤0.0001

High Purity Sodium metabisulfite
Main content(Na2S2O5)≥98
Fe(As content Fe)≤0.001
Heavy metal content(Pb)≤0.0005
As content(As)≤0.0001
PH Value4.0~4.6

Refine level Sodium metabisulfite
Main content(Na2S2O5)≥98.5
Fe % (As content Fe)≤0.0005
Arsenic(As) content≤0.00005
Heavy metal content(Pb)≤0.00005

Sodium Metabisulfite is also named Sodium Pyrosulfite, Sodium Metabisulfite is white or slight yellow crystalline powder, with strong smell of SO2, the proportion of 1.4, soluble in water, aqueous solution of Sodium Metabisulfite is acidic, Sodium Metabisulfite contacts with strong acids, released SO2 and generates sodium sulfate, commonly known as Glauber's salt. For a long time in the air, Sodium Metabisulfite can be oxidized into Na2S2O6, so Sodium Metabisulfite can not be stored for a long time. Above 150 degrees Celsius, Sodium Metabisulfite can decompose of SO2. Soluble in water and glycerin, slightly soluble in ethanol. Soluble in water, Sodium Metabisulfite generates into stable sodium bisulfite, pH under 1% aqueous solution ranged from 4.0 to 5.5.

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