| Customization: | Available |
|---|---|
| CAS No.: | 7757-83-7 |
| Formula: | Na2so3 |
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| ITEM | SPECIFICATION | TEST RESULT |
| Na2SO3 content : | 97.0 %min | 97.56% |
| 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 |
Sodium sulphite has many uses. In industry, it is mainly used as reducing agent, bleaching agent and preservative. For example, it reacts with silver salts to develop visible images on exposed film, so it is often used in photography and imaging technology. In addition, due to its reducing properties, sodium sulfite is also effective in killing bacteria and viruses and is used to purify water or disinfect medical tools. 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. At the same time, in the textile printing and dyeing industry, sodium sulfite is also used as a bleaching agent and vat residual dye.
Storage conditions: Sodium sulphite should be stored in a cool, ventilated warehouse, away from fire and heat sources, and away from direct sunlight. At the same time, it should be stored separately from oxidants, acids, and alkalis to prevent dangerous mixing.
Operational safety: Operators should receive special training and strictly abide by operating procedures. During operation, appropriate protective equipment should be worn, such as self-priming filter dust masks and chemical safety glasses, as well as rubber acid and alkali resistant clothing and rubber acid and alkali resistant gloves to prevent contact with dust and harmful substances.
Precautions for use: Sodium sulfite is easily decomposed and becomes ineffective, so it is recommended to prepare it for immediate use. In the food industry, since its solution is unstable and volatile, it should be prepared and used immediately to maintain its effectiveness. In addition, since sodium sulfite is prone to chelation reactions with metal ions, direct contact with substances containing metal ions should be avoided.
Guangzhou Zhifan Chemical Co., Ltd.
The company Procurement and channel specialists who have served in the chemical industry for many years provide you with the latest chemical product consultation and market changes. Our company has over 5,000 square meters of dedicated chemical warehouses distributed in various regions of South China, close to Guangzhou Nansha Port and Shenzhen Port. , international shipping is more convenient. Our company has the qualification to operate dangerous goods. Our products have passed quality inspection by relevant departments and provide quality inspection reports. You can buy with confidence!
Zhifan Chemical has been focusing on the chemical industry for more than 15 years. Its main products are: 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, etc.
Are you a factory or a trader?
We are a trader, but we have cooperative factories that provide stable supply, especially sodium hydroxide and sodium sulfide. We are the exclusive agent in southern China and have certain advantages in channels and prices. At the same time, if you need other chemical products, we can also Finding a suitable factory for you to cooperate with will not limit you to one factory providing a single product.
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?
Our company's warehouse is in Guangzhou, China, close to Nansha Port and Shenzhen Bay, so it will be shipped by sea from these two ports first. The delivery time depends on your distance from the port. Southeast Asian countries usually take about 5 days, and Oceanian countries usually In about 10 days, it depends on the shipping company, I can make further confirmation based on your address after you place the order.
Are the quality of your products stable?
Because we are a trading company, we cooperate with large-scale factories in China. Before cooperating with them, we will purchase samples and inspect the factories. Only products with stable product quality that comply with national regulations can enter ours. In the product list, we will conduct an additional inspection for the exported goods, and any products that do not meet the standards will be rejected by us.
If I purchase a large quantity, can I get any additional discounts?
Regarding large customers, we have more favorable prices, but based on different chemicals, you need to consult customer service to get the latest quotation.
What's your MOQ?
Our minimum order quantity is 1 ton, which is shipped by LCL with other goods (except for special chemicals)
Do you provide free samples?
We do not provide free samples for the time being, because the production methods and quality testing of chemical standards are the same. I can provide you with the quality testing report of our products and other certifications you need to ensure that our quality is the same as high-quality products on the market.
Can I customize my own logo or packaging?
Our products are packaged in 25kg, 50kg and barrels, generally in English packaging and branded in Chinese. If you need other packaging methods, you can contact our customer service. Special packaging requires customization fees.
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