Sodium hydrosulfite has a special odor. Sensitive to light. The solid state exists in anhydrous and diaqueous crystalline forms. The second water crystal is unstable, and can be dehydrated when gradually heated to a certain temperature in alkaline medium, and transformed into anhydrous crystals, which are easy to decompose. It is usually more stable in alkaline media than in neutral media, and more stable when dry than when wet. Moisture and heat or exposure to air can accelerate its decomposition and even combustion. When decomposed, sulfur dioxide and a lot of heat are released, and it can spontaneously ignite at 250 ° C. In the presence of moisture or in aqueous solutions, sodium bisulfite and sodium bisulfite are quickly formed and become acidic. Soluble in water, slightly soluble in ethanol, aqueous solution is neutral. It burns easily when wet. Due to its unstable nature, a certain amount of stabilizer is added to the finished product.
Q1: Can I get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2: What's your MOQ?
A: Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q3: How about delivery leadtime?
A: Delivery lead time: Within 3-5 days after payment confirmed.
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A: You are always warm welcomed to visit us at any time.Before we start B2B, MIC has audited our company on-spot and approved our credit. Commitment is the No.1 Point of our Enterprise's Value.
Q5. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery, International Authorized Third-Party Test for the products if you need are highly welcome.
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A: We can do according to the customers' request. Pls send inquiry(such as QTY, Usage, Package) in below or your convenient way, will promptly reply in 15mins.
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