Sodium Bisulfite CAS 7631-90-5
Orthophosphorus Acid CAS 10294-56-1
11/04/2022
Phthalic Acid CAS 88-99-3
06/04/2022
Name: Sodium Bisulfite
Cas: 7631-90-5
Purity: 99%min
MOQ: 1KG
Directory Guidance on Sodium Bisulfite
- Basic Information of Sodium Bisulfite
- What is Sodium Bisulfite?
- The Nature and Specifications of Sodium Bisulfite
- What Are The Uses of Sodium Bisulfite?
- Physicochemical Properties of Sodium Bisulfite:
- Is Sodium Bisulfite Safe to Eat?
- Related References
- Our Promise
- Loading and Transportation
- Hot Products
Chemical Structure
Basic Info:
| CAS No: | 7631-90-5 |
| Formula: | HNaO3S |
| EINECS: | 231-548-0 |
| Stock Availability | In stock |
| Brand Name | Look chemical |
| Origin | China |
Product Introduction:
Sodium bisulfite, also called salt bisulfite, is an inorganic substance with the chemical formula NaHSO3. It is a white crystalline powder with an unpleasant smell of sulfur dioxide. It is soluble in water as well as slightly soluble in alcohol, which is easily oxidized to sulfate airborne.
Sodium bisulfite undergoes addition reaction with active aldehydes and ketones to form sodium bisulfite adduct, which can be used to avoid the use of highly toxic HCN in the addition of carbonyl and HCN.
Using sodium hydroxide or sodium carbonate to absorb sulfur dioxide, the reaction is completed under the condition of pH less than 5.5, the concentration is below 34%, and there are by-products obtained from flue desulfurization.
Sodium bisulfite has two main properties, one is reducibility, and the other is addition to carbonyl. NaHSO3 exists in the market, and its main component is sodium metabisulfite Na2S2O5.
Nature and Specifications:
Product Nature
Specification
Product Nature
- Density: 1.48
- Melting point: 150 °C
- Refractive Index: 1.43 – 1.47
- Water solubility: 300 g/L
- Form: Powder/Solid
- Solubility: 300 g/L
Specification
| Item | Specification |
| Product Name | Sodium Bisulfite Powder |
| CAS No. | 7631-90-5 |
| Appearance | White crystalline powder |
| Shelf Life | 2 years |
| Packing | 1kg/bag,25kg/bag or as your requirements |
Product Packaging
Previous
Next
Product Usage:
Sodium bisulfite is divided into food grade, industrial grade and pharmaceutical grade.
Food Grade Sodium Bisulfite
- Food grade sodium bisulfite powder is mainly used as reducing agent, food preservative and bleaching agent, etc.
- Sodium Bisulfite can be utilized in sweet fruit, sugar, sugar, rock sugar, caramel, sweet, fluid glucose, dried out fruit, dried out vegetables, vermicelli, bamboo fires, mushrooms as well as canned mushrooms, etc. Details are as follows:
- Bleach (eg candy, pastries, magnolia chips, etc.).
- Loosening agents (such as bread, biscuits, etc.).
- Preservatives and fungicides (eg juice, canning, brewing, grain storage, etc.).
- Antioxidant preservatives (such as golden needle sprouts, seafood, fruits and vegetables, etc.).
Industrial grade sodium bisulfite
- Industrial grade sodium bisulfite is used as a reducing agent in dyestuff, papermaking, leathermaking, chemical synthesis and other industries.
- Sodium bisulfite can quench some oxidants such as hypochlorous acid, Oxone, NBS, halogen, etc. in the post-treatment process.
- It can also be used for the treatment of chromium-containing wastewater and as an electroplating additive.
Pharmaceutical grade sodium bisulfite
- The pharmaceutical industry is used as an intermediate for the production of analgin and aminopyrine.
Physicochemical Properties of Sodium Bisulfite:
Using sodium hydroxide or sodium carbonate to absorb sulfur dioxide, the reaction is completed under the condition of pH less than 5.5, the concentration is below 34%, and there are by-products obtained from flue desulfurization. NaOH+SO2→NaHSO3
Add sodium hydroxide or sodium carbonate to the liquid Sodium bisulfite, and then absorb the sulfur dioxide to precipitate crystals. After centrifugation and drying at low temperature, an anhydrous (also called sodium metabisulfite) is obtained. 2NaHSO3→Na2S2O5+H2O
Na2S2O5 is generally a white powder, which is usually decomposed little by little, and is accelerated by the action of moisture. 2NaHSO3→Na2SO3+SO2+H2O
Sodium bisulfite has a strong reducing property, and in the case of acid, it decomposes to release sulfur dioxide. NaHSO3+HCl→NaCl+H2O+SO2
The use of sodium bisulfite is roughly the same as that of sodium sulfite. It is usually sold in powder or 34% solution for food preservation (except sesame and beans), bleaching, dyeing, medicine, pulp steamer, straw bleaching, plating Electroplating baths for copper, reducing agents, pesticides, etc.
Is Sodium Bisulfite Safe to Eat?
Is Salt Bisulfite Safe to Eat? Yes, it almost has no damaging results as well as likewise the security has actually been accepted by the U.S. Fda (FDA) as well as European Food Safety And Security Authority (EFSA), as well as the Joint FAO/WHO Specialist Committee on Artificial Additive (JECFA). and That Scientific Committee on Food (SCF).
Sodium Bisulfite Manufactures advises that you adhere to proper safety and security standards and decide on the appropriate salt bisulfite intake.
Related References:
- “Estimating Lattice Energy in the Relative Stability of Bisulfite and Metabisulfite” – ACS | 1 Dec 2003.
- “Sodium bisulfites and metabisulfites of alkali metals” – Wiley Online Library, Inorganic Synthesis | Jan 1, 1946.
- Wikipedia
Our Promise:
Achievements
Service
FAQ
Advice on Shipping
Achievements
I’m william, CEO of Look Chemical Co., Ltd. Welcome to visit our company. As China’s top Global Supply Specialist of chemicals, we have always been adhering to the principle of “service first, quality first, mutual benefit”, and we insist on Create value for customers and grow together with customers.
In the past few years , we have provided efficient and satisfactory services to more than 6000 customers and have been widely praised internationally. In the future, we will strive to provide more than 100,000 customers with professional and thoughtful services, and strive to become your first choice for worry-free purchasing chemicals in China , Hope to bring you a good cooperation experience. If you have any questions, please feel free to contact us.
Service
Pre-Sales Service
* Timely reply and 24 hours online, the professional team will provide you with the most favorable prices and high-quality products.
* The sample supports testing and inspection.
* Each batch of products will be tested to ensure that its quality meets user needs.
*Packaging can also be made according to customer requirements.
*Any inquiries will be answered by our relevant personnel within 24 hours.
*We will provide you with commercial invoice, packing list, packing list, COA, health certificate and certificate of origin if you need it. If your market has other special requirements, please let us know.
After-Sales Service
*We will monitor the logistics information in real time and will share the information with you.
* You can consult us at any time if you have any questions about the product, and we will answer you in time.
*If you have any questions about the product, you can report it to us, we will deal with it in time for you, and the product can be returned.
FAQ
DO YOU ACCEPT SAMPLE ORDER?
We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.
WHAT’S YOUR MOQ?
Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.
IS THERE A DISCOUNT?
Different quantity has different discount.
HOW TO CONFIRM WHETHER THE PRODUCT QUALITY MEETS OUR NEEDS BEFORE PLACING AN ORDER?
You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.
DO YOU SUPPLY PRODUCT REPORT?
Yes. We’ll give you product analysis report before shipping.
LEARN MORE ABOUT US
Shandong Look Chemical
Advice on Shipping
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
