Product Description
Sodium sulphite is a white or yellowish crystalline powder, also known as sodium thiosulfate or sodium bisulfite. It is easily soluble in water, hygroscopic, and gradually oxidized to sodium sulfate in the air. Sodium sulphite is widely used in industry, such as as a reducing agent, bleaching agent and preservative, and is also used in the manufacture of other chemicals such as sodium thiosulfate, organic chemicals, etc. In addition, in the food industry, sodium sulfite is commonly used as a bleaching agent, preservative, loosening agent and antioxidant to extend the shelf life of food and improve its appearance and taste.
| ITEM |
SPECIFICATION |
TEST RESULT |
| Na2SO3 content : |
96.0 %min |
96.58% |
| Sodium sulphate : |
2.5%max |
1.30% |
| Sodium chloride (NaCL): |
0.1%max |
0.08% |
| Iron (Fe) : |
30ppm max |
15ppm |
| Water insoluble : |
0.02%max |
0.02% |
| HEAVY METAL AS PB |
10ppm max |
5ppm |
| Free alkali (as Na2CO3) : |
0.10%max |
0.08% |
| Arsenic: |
2ppm max |
1.5ppm |
Application Areas
Sodium Sulphite by Guangzhou Zhifan Chemical Co., Ltd.
Sodium sulphite is a versatile chemical compound with various industrial applications. It serves as a reducing agent, bleaching agent, and preservative in industries such as photography, water purification, and food processing. Its ability to react with silver salts makes it ideal for developing images on film, while its antibacterial properties make it effective for disinfection purposes. In the food industry, sodium sulphite acts as a bleaching agent, preservative, loosening agent, and antioxidant, enhancing food quality and extending shelf life. Moreover, it finds use in textile printing and dyeing as a bleaching agent and vat residual dye remover.
Precautions
Storage and Safety Guidelines for Sodium Sulphite
Storage conditions: Sodium sulphite should be stored in a cool, ventilated warehouse, away from fire, heat sources, and direct sunlight. It should be kept separate from oxidants, acids, and alkalis to prevent dangerous mixing.
Operational safety: Operators must undergo special training and strictly follow operating procedures. Protective equipment like self-priming filter dust masks, chemical safety glasses, rubber acid and alkali resistant clothing, and gloves should be worn to prevent contact with harmful substances.
Precautions for use: Sodium sulfite is easily decomposed and should be prepared for immediate use. In the food industry, its solution should be prepared and used immediately to maintain effectiveness. Avoid direct contact with substances containing metal ions to prevent chelation reactions.
Company Profile
Welcome to Guangzhou Zhifan Chemical Co., Ltd.
Our company, with over 15 years of experience in the chemical industry, offers the latest product consultation and market insights. We have 5,000 square meters of chemical warehouses strategically located near Guangzhou Nansha Port and Shenzhen Port for convenient international shipping. With qualifications to handle dangerous goods, our products undergo rigorous quality inspections, providing you with confidence in your purchase.
Main Products:
- Sodium Hydroxide
- Sodium Sulfide
- Polyaluminum Chloride
- Polyacrylamide
- Oxalic Acid
- Compound Alkali
- Sodium Hydrosulfide
- Sodium Metabisulfite
- Ferrous Sulfate
- Soda Ash
- Glucose
- Citric Acid
- Industrial Salt
- Defoaming Agent
FAQ
Are you a factory or a trader?
As a trader, Zhifan will review and sample products from relevant factories before providing customers with different products to ensure high quality and good prices.
Are your prices the lowest?
Our prices are market prices, but if you purchase more products, we can give you additional discounts, or you can communicate with our sales team about what price you think is reasonable.
How to transport?
For chemical products, we generally transport them by sea by full container. If the quantity you purchase does not meet the full container requirements or special products, we will combine them with other goods or pack the special chemicals separately. The packing method can be confirmed after placing the order.
How long does it take to deliver to my country or address?
According to the products you need, we will choose the nearest factory and port to transport you. Of course, it also depends on your destination port. Please consult sales for the specific time.
Are the quality of your products stable?
High-quality products have always been the core of Zhifan Chemical. We believe that only good products and competitive prices can meet the needs of customers in all aspects.
What's your MOQ?
Our minimum order quantity is 1 20GP(20-28Ton/MT)
Do you provide free samples?
We can provide corresponding free samples, but you need to pay the transportation costs. At the same time, due to the requirements of some countries or express companies, we do not support the sending of powder or liquid samples. The details will depend on the product and country.
Can I customize my own logo or packaging?
We generally do not provide customized packaging requirements. Usually, the factory packaging in Chinese or English shall prevail, and the product is a chemical raw material and does not require additional customized packaging.
Is the packaging in English?
We have Chinese packaging and English packaging for you to choose from. Different brands have different packaging. If you have requirements for the brand, please tell our sales.
What payment methods do you support?
We currently support T/T, L/C (bank with good reputation), etc. We do not support O/A,D/P and cash on delivery.
I need products every month, is the supply stable?
Yes, in addition to cooperating with suppliers, we also have a 5,000-square-meter warehouse to store goods of different brands so that they can be shipped as soon as an order is placed.
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