Sodium metabisulfite CAS 7681-57-4 Na2S2O5 Food Grade

Used as a preservative, bleach and loose agent in food processing. Industrial sodium sulfite used in printing and dyeing, organic synthesis, printing, leather, pharmaceutical and other departments; Sodium pyrosulfite is used in the chemical and pharmaceutical industries for the production of insurance powder, sulfadimethylpyrimidine, caprolactam, etc., as well as the purification of chloroform, phenylpropanone and benzaldehyde. Used in the photographic industry as a fixing agent ingredient. The spice industry is used to produce vanillin. Used as preservative in brewing industry, rubber coagulant and dechlorination agent after cotton bleaching. Organic intermediates, dyes, tannery used as reducing agents used in electroplating industry, wastewater treatment in oil fields and as beneficiation agents in mines.

Laboratory use
Sodium bicarbonate can be used as an analytical reagent and is also used in inorganic synthesis. Can be used to prepare sodium bicarbonate-sodium bicarbonate buffer solution, adding a small amount of acid or base can keep the hydrogen ion concentration does not change significantly, can keep the pH value of the system relatively stable.

Industrial use
Sodium bicarbonate can be used in the production of acid-base fire extinguishers and foam fire extinguishers, and sodium bicarbonate can be used in rubber and sponge production in the rubber industry. Sodium bicarbonate can be used as a flux for casting ingot in metallurgical industry. In the machinery industry, sodium bicarbonate can be used as a molding aid for casting steel (foundry) sand. In printing and dyeing industry, sodium bicarbonate can be used as fixing agent for dyeing and printing, acid-alkali buffer, and rear treatment agent for fabric dyeing and finishing. The addition of baking soda to dyeing can prevent the yarn from producing colored flowers, and can also be used as a detergent for wool.

Food processing use
In food processing, sodium bicarbonate is one of the most widely used loosening agents, used in the production of biscuits, bread, etc., but after the action will remain sodium carbonate, too much use will make the food alkalinity is too large and lead to bad flavor, yellow brown color. It is the producer of carbon dioxide in soft drinks; It can be combined with alum to form alkaline baking powder, and can also be combined with soda ash to form civil stone alkali. It can also be used as a butter preservative. In vegetable processing can be used as fruit and vegetable color protection agent. Adding about 0.1% to 0.2% sodium bicarbonate when washing fruits and vegetables can make the green stability. When sodium bicarbonate is used as fruit and vegetable treatment agent, the pH value of fruit and vegetable can be increased, the water retention of protein can be improved, the tissue cells of food can be softened, and the astringent components can be dissolved. In addition, it has the effect of removing the smell of sheep milk, and the use amount is 0.001% to 0.002%.

Agricultural and animal husbandry purposes
Sodium bicarbonate can be used for agricultural seed soaking, but also to make up for the lack of lysine content in feed, sodium bicarbonate dissolved in a small amount of water or mixed into concentrate to feed cattle (add the right amount), can promote the growth of cattle, but also significantly improve the milk production of cows.

Medical use
Sodium bicarbonate can be used as a pharmaceutical raw material for the treatment of excess stomach acid, metabolic acidosis, and can also alkalize urine to prevent uric acid kidney stones. It can also reduce the renal toxicity of sulfonamides, prevent hemoglobin deposition in renal tubules during acute hemolysis, and treat the symptoms caused by excessive stomach acid; Intravenous infusion has non-specific therapeutic effect on barbiturates, salicylic acids and methanol poisoning. However, it is prohibited for gastric lavage when swallowing strong acid poisoning, and a large number of injections, renal insufficiency or long-term application can cause arrhythmia, muscle spasm, pain, abnormal fatigue and weakness, slow breathing, oral odor, frequent urination, urgent urination, persistent headache, loss of appetite, nausea, vomiting, etc.

The company has professional warehouses in Tianjin, Shanghai, Shandong, Nanjing, and other places, with a sufficient supply of goods.

Tianjin Shengtai Chemical Co., Ltd.
Suntechemical is a professional supplier of fine chemicals and one of northern China's largest suppliers. We have over 25 years of experience in the chemical field. The company has professional warehouses in Tianjin, Shanghai, Shandong, Nanjing, and other places, with a sufficient supply of goods. Now the United States, the European Union, Japan, Canada, and other countries have more than 100 customers to establish stable trade relations.

Our products are widely used in medicine, pesticides, food, oilfield and water treatment, daily chemicals and cosmetics, surfactants, inks, rubber, cement additives, coatings, polyurethanes, adhesives, solvents, additives, leather, textile, printing and dyeing, building materials, metal processing and other fine chemical-related industries.

Q1: May I get some samples from your side?
Re: Yes, of course. We’d like to provide a 10-1000 g free sample to you, which depends on the product you need. For freight, your side needs to bear, but we will refund you after you place a bulk order.

Q2: What is your MOQ?
Re: Usually our MOQ is 1 kg, but sometimes it also is flexible and depends on the product.

Q3: What kinds of payment are available for you?
Re: We recommend you pay by T/T or L/C, and you can also choose to pay by PayPal, or MoneyGram if the value is less than USD 3000. Besides, sometimes we also accept Bitcoin.

Q4: How about lead time?
Re: For small quantities, the goods will be sent to you within 1-3 working days after payment. For larger quantities, the goods will be sent to you within 3-7 working days after payment.

Q5: How long I can get my goods after payment?
Re: For small quantities, we will deliver by courier(FedEx, TNT, DHL, etc) and it usually will take 3-7 days to your side. If you want to use a special line or air shipment, we can also provide and it will cost about 1-3 weeks. For large quantities, shipment by sea will be better. For transport time, it takes 3-40 days, which depends on your location.

Q6: What’s your after-sales service?
Re: We will inform you of the progress of the order, such as product preparation, declaration, transportation follow-up, customs clearance assistance, etc.