Sodium metabisulfite/97% CAS NO.7681-57-4

Min.Order: 1 Kilogram
Payment Terms: L/C,D/A,D/P,T/T,MoneyGram,Other

Product Details

Keywords

Fertisilo
Natrii disulfis
Campden Tablets

Quick Details

ProName: Sodium metabisulfite/97%
CasNo: 7681-57-4
Molecular Formula: Na2O5S2
Appearance: White crystalline powder.
Application: Soap, chemicals, antioxidants, pestici...
DeliveryTime: 2-3day
PackAge: 25KG/Cardboard bucket or as required
Port: Shanghai or Other
ProductionCapacity: 1000 Metric Ton/Month
Purity: 97（%）
Storage: Store in dry, dark and ventilated plac...
Transportation: by sea or by air
LimitNum: 1 Kilogram

Superiority

Changzhou Xuanming Chemical Co., Ltd. is dedicated to the technology development, manufacturing, import and export chemicals, which are specialized in pharmaceutical intermediates, pesticide intermediate, industry of fine chemicals and custom synthesis. Now, we enjoy good reputation among customers and take favorable market share in domestic and at abroad.

Changzhou Xuanming Chemical CO., LTD is located in Northern Jiangshu Industry Park, we have modern manufacture bases and some laboratories, which can supply the key intermediate for your projects, and short your synthesis scheme and supply you a reference compound for bioassay or a high purity analytical standard. We have been abided by “treat technology as first, quality as basis, customers as God, and be honest and sincere”. It is our final aim to provide environmental and high technological products and meet customers’ requirements according to keep effors on developing new chemical fields.

Changzhou Xuanming Chemical CO., LTD promises to help you with heart and soul.

Details

Properties

Synonyms:

Sodium pyrosulfite;

Natrium pyrosulfit;

Campden Tablets;

Disodium disulfite;

Fertisilo;

Natrii disulfis;

Natriumbisulfit;

Sodium disulfite;

Formula: Na2O5S2

Exact Mass: 189.89800

Molecular Weight: 190.10700

PSA: 124.92000

LogP: 0.27220

Appearance & Physical State: white crystalline powder

Density: 1.48

Melting Point: 150ºC

Water Solubility: 540 g/L (20 ºC)

Stability: Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.

Storage Condition: Store at RT.

Safety Info

hazard declaration: H302; H318

hazard declaration add: Contact with acids liberates toxic gas.

waring notice: P280; P301 + P312 + P330; P305 + P351 + P338 + P310

RTECS: UX8225000

Safety Statements: S26-S39-S46

HS Code: 2832100000

Packing Group: III

WGK Germany: 1

RIDADR: UN 2693

Risk Statements: R22; R31; R41

Hazard Codes: Xn

Description

Sodium metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium (metabisulfite). It is used as a disinfectant, antioxidant and preservative agent.

Sodium metabisulfite Usage And Synthesis

Decription

Sodium metabisulfite (chemical formula: Na2S2O5) appears as a white crystalline or powder solid with a slight sulfur odor. It is toxic upon inhalation and can strongly irritate skin and tissue. It can be decomposed to release toxic oxide fumes of sulfur and sodium upon high temperature. It can be mixed with water to form a corrosive acid. It is generally used as disinfectant, antioxidant, and preservative agent as well as a laboratory reagent. As a kind of food additive, it can be used as a preservative and antioxidant in food. It can also be applied to the wine and beer making. Moreover, it can be used to sanitize the equipment of homebrew and winemaking as a cleaning agent. It also have various kinds of other applications, e.g. being applied to photography, as an excipients in some tablets, for water treatment, as a source of SO2 in wine, as a bactericide and as a bleaching reagent as well as reducing agent. It can be manufactured through the evaporation of a sodium bisulfite which has been saturated with sulfur dioxide. It should be warned that sodium metabisulfite has certain acute effects on the respiratory system, eyes and skin. In severe case, it can cause breathing difficulty and even pulmonary damage which finally leads to death. Therefore, effective protective measures and attention should be taken during the operation.

Usage

Sodium metabisulfite (SMBS, Sodium disulfite) is a white, granular solid sodium salt. an inorganic compound made up of sodium, sulfur, and oxygen, and used in many industries:

in the pulp and paper industry, in the photographic industry and in the various other industries as a bleach or dechlorinator.
Food Grade sodium metabisulfite may be used as a food preservative. It is also commonly added to various food products and wines as a preservative.
Sodium metabisulfite can also be used in the manufacture of other chemicals, Used in production of cleaning agents, detergents, and soaps.
It also acts as a corrosion inhibitor in oil and gas industry, as a bleaching agent in the production of coconut cream, as the source of sulfur dioxide and in the destruction of cyanide in commercial gold cyanidation processes.
Gold mining industry: It is utilized in the precipitation of gold from auric acid as well as in the waste water treatment to remove hexavaent chromium as trivalent chromium by precipitation after reduction.
Preservative in photo developer solutions, it is used in photography.
Oxygen scavenge:it plays as an oxygen scavenger to eliminate the dissolved oxygen in wastewater and in pipes.
Sodium metabisulfite may be used as an initiator during the cross-linking polymerization of polybutadiene in the cores of the vesicle membranes.
It may be added as an antioxidant during the preparation of stock solutions of 6-hydroxydopamine in various studies.
Dechlorination in municipal wastewater, pulp & paper, power, and textile water treatment plants.

Sodium metabisulfite/97% CAS NO.7681-57-4

Keywords

Quick Details

Superiority

Details

Other products of this supplier