Sodium Metabisulphite 98.0%Min (SO2:65%Min) (Changsha Yonta) 

-  Product Identification

CAS No.

7681-57-4

H.S. Code

2832.100000

Formula

Na2S2O5

Molecular Weight.

190.12

Toxicity

LD50:178 mg/kg (rabbit vein)

Synonyms

sodium pyrosulfite, sodium metabisulfite

-  Physical And Chemical Properties

Physical State

(Appearance)

White or light yellow powder, relative condense 1.4 in moist. It dissolves in water and glycerine and little in ethanol. Decomposed in humid, oxygenized into sodium sulfate by exposed in air, sulpher dioxide will be released when it contacts with strong acid and then created the relative salt, resolved by heated at 150 oC.

Melting Point

/

Boiling Point

/

Specific Gravity

1.48

Solubility in water

54 g/100ml (20 oC)

PH

4-4.6

Flash Point

/

Stability

Stable under ordinary conditions

-  Applications

Mining Industry : N/A

Medicine industry: Used for manufacturing trichloromethane, sulphetrone and benzaldohyde.
Rubber industry: Used as coagulative agent.
Dye-industry: Used as dechlorination agent and cotton boiling-off agent for bleached cotton.
Leather industry: It can make leather soft, well-developed, tough water proof, wear-ability and etc.
Chemical industry: Used for manufacturing hydrochloride hydroxylamine and etc.
Light-sensitive industry: Used as developer and others.

-  Specification

Quality Standard

GB1893-1998

Appearance

White crystal powder

AssayY(Na2S2O5)

95% Min ( 98%MIN)

SO2

65% Min

Water Insoluble

0.05% Max

Iron (Fe)

50PPM Max

Heavy Metal (Pb)

20PPM

Chloride (Cl)

- / 3PPM

Arsenic (As)

2PPM

PH Value

4.0 – 4.6

-  Transportation

Storage

Cannot be stored and transported together with gasoline, acids or oxidants and other inflammable substances.

Packing

In 25kgs / 1000Kgs Net P.P. Woven Bags With PE Liner.

Hazard Class

N/A

UN No.

N/A

-   Other Trade Information

Min. Order Quantity :

1FCL (25Mts)

Supply Capacity

36,000mts /Year

Loading Capacity

27Mts/1080bags (1x20'FCL)

Port of Loading

Guangzhou,China

Fresh Stocks

Yes

Ref. Price

USD310.--USD325.-/MT FOB Guangzhou / Tianjin, China

Shipment Time

Within 2-3 weeks upon receipt of advance payment or L/C .

Payment Time

T/T In Advance, Sight L/C, L/C 60 days after B/L date.

Origin

Hunan, Tianjin

Sample Availability

Yes

Main Export Markets

South Africa, Thailand, Lebanon, Iran, Spain