- Overview
- Product Description
- Product Parameters
- Function and Applications
- Packaging & Shipping
- Company Profile
- Our Service
- FAQ
Basic Info.
Product Description
Introduction (Potassium Metabisulfite cas 7558-79-4 )
Product characteristics: The Product was colorless crystal or white crystalline powder with the relative density of 2.34 .The melting point was 150-190 ºC (decomposition). The product had a flavor of sulfur dioxide and soluble in water with acidic aqueous solution, it was not soluble in ethanol. Sulfur dioxide was released from acidic solution and oxidized to sulfate in the air.
Products Parameters:
| Test item | Unit | Specification |
| K2S2O5 | g/100g | 98% min |
| SO2 | g/100g | 56.0 min |
| K2S2O3 | g/100g | 0.1 max |
| Na | g/100g | 2 max |
| Cl | g/kg | 0.5 max |
| pH-value(10%solution) | - | 3.8-4.8 |
| heavy metal(measured by Pb) | mg/kg | 10 max |
| As | mg/kg | 1 max |
| Cu | mg/kg | 1 max |
| Fe | mg/kg | 5 max |
| Hg | mg/kg | 0.1 max |
| Pb | mg/kg | 1 max |
| Se | mg/kg | 1 max |
| Zn | mg/kg | 1 max |
| K2SO3 +K2SO4 | mg/kg | excess material |
1. Use as a food bleach, preservative and antioxidant. Long-term consumption of excessive sulfur dioxide food, will cause serious damage to the body, and may even cause cancer.
2. Used as analytical reagent. It is also used as a developing agent, reducing agent and bacterial inhibitor.
3. Potassium metabisulfite is used as an additive in thiosulfate silver plating, and its sodium salt is also used in the treatment of chromium-containing wastewater.
Packing and shipping:
Packing Details:
Packaging: Packages: 25kg/bag,It can also be packaged according to customer needs, and can be affixed with your LOGO and other information.
Shipment:we have established solid cooperation with DHL,TNT,Fedex,UPS,EMS and air freight as well as sea shipping companies for many years,and it is possiable that we use your own shipping agent too.
Company introduction:
Mingray Technology Group Co., Ltd. is a chemical operating enterprise which authorized and approved by MOFCOM which was established in 2009. Our company own variety of export products which are widely used in chemical, pharmaceuticals, textile printing & dyeing, leather processing, fertilizer, water treatment, construction industry, food &feed additives and other areas.Sodium sulfide, sodium carbonate, oxalic acid, citric acid, PAC are partial strong products. For every years, we stick to business philosophy of" integrity, deligence, fighting, innovation ", and have winning customers praise with our superior quality, favorable price and excellent service.We are located in Changsha city Hunan province which is aslo the hometown
of "MaoZeDong".We have large warehouses in Hubei, Jiangxi, and Hunan provinces in China with sufficient supply.
Sincerely hope to cooperate with more friends in the world and seek common developments.
Our factory:
Our warehouse:
Our team:
Our exhibition:
Our certificates:
Our service:
- To supply high-quality products with reasonable prices in food additive industry.
- To follow orders and arrange shipping in time,providing complete documents for customs clearance according to different export policies in different countries.
- To take all the responsibility in case of product quality problems.
- To inform customers of price trends in the market timely.
- Perfect after-sale service,any inquiry will be replied within 24hours.
- Reasonable and competitive prices with short lead time.
- Sample is available for your evaluation and formulation development.
- Dedicated to high quality,stable supply and considerate service.
FAQ:
1.What are your payment terms?For our first cooperate client,usually by TT 30% deposit,balance paid agansit BL copy,or full amount LC at sight.If you be our regular client, payment term can adjust.
2.What is your delivery time?
It depends on order quantity,usually we will arrange shipment within 3-20days.
3.How about packing?
Usually we provide packing as 25kg/bag or carton.Of course,if you have special requirment for packing,we will adjust according to you.
4.When can I get reply?
Our sales manager will contact you within 24hours.
5.How about the validity of products?
According to the products you order,usually 2 years.
6.What documents do you provide?
Usually we provide Commercial Invioce,Packing List, Bill of Loading,COA,Healthy Certificate and Original Certificate,etc.If there are any special requierments in your market,please let us know.
7.Can I get sample before order?
Yes,we can provide free sample once price is agreed,and you have to pay us delivery fee in advance.
8.Where is your loading port?
Usually QINGDAO port.
