- Overview
- Product Description
- Product Analysis
- Application
- Packaging & Shipping
- Why choose us
- Company Profile
- FAQ
Basic Info.
Product Description
Product Description
Chemical & Physical Properties
| Exact Mass | 189.898254 |
| PSA | 124.92000 |
| LogP | 0.27220 |
| Stability | Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive. |
| appearance | White crystalline powder |
| Storage conditions | 1. It shall be stored in a cool and dry warehouse. The package shall be sealed against air oxidation. 2. Pay attention to moisture-proof. During transportation, it shall be protected from rain and sun. It is strictly prohibited to store and transport together with acids, oxidants and toxic and harmful substances. 3. In case of fire, water and various fire extinguishers can be used. |
| Packing | 25kg/50kg net per PP woven bag with inner food-grade polyethylene film bag. |
| Water Solubility | 540 g/L (20 ºC) |
Safety Information
| Signal Word | Danger |
| Hazard Statements | H302-H318 |
| Supplemental HS | Contact with acids liberates toxic gas. |
| Precautionary Statements | P280-P301 + P312 + P330-P305 + P351 + P338 + P310 |
| Personal Protective Equipment | dust mask type N95 (US);Eyeshields;Gloves |
| Hazard Codes | Xn:Harmful |
| Risk Phrases | R22;R31;R41 |
| Safety Phrases | S26-S39-S46 |
| RIDADR | 3260 |
| WGK Germany | 1 |
| RTECS | UX8225000 |
| Packaging Group | III |
| HS Code | 2832100000 |
Product Analysis
| ITEM | FOOD GRADE | TEST RESULTS |
| Purity (As Na2S2O5) % | ≥96.5 | 97.10 |
| Iron (Fe) % | ≤0.003 | <0.003 |
| Heavy metals ( As Pb ) % | ≤0.0005 | <0.0005 |
| Arsenic ( As ) | ≤0.0001 | <0.0001 |
2.It is used as chromatographic analysis reagent, antiseptic and reducing agent, dye and pharmaceutical industry
3.Sodium pyrosulfite has stronger reducibility than sulfite, and its effect is similar to that of sodium sulfite. Our country stipulates that it can be used for candied fruits, biscuits, sugar, crystal sugar, malt sugar, candy, glucose, liquid glucose, bamboo shoots, mushrooms and canned mushrooms, with the maximum use amount of 0.45g/kg. The residue (calculated by SO2) of candied fruits, bamboo shoots, mushrooms and canned mushrooms, grapes and blackcurrant concentrated juice is less than 0.05/kg; The residue of biscuits, sugar, vermicelli and other varieties is less than 0.1g/kg; The residual amount of liquid glucose shall not exceed 0.2g/kg.
4.Food industry is used as bleach, antiseptic, loose agent, antioxidant, color fixative and fresh-keeping agent.
5.The pharmaceutical industry is used to produce chloroform, phenylsulfone and benzaldehyde. The rubber industry is used as a coagulant. The printing and dyeing industry is used as a dechlorination agent after bleaching of cotton cloth and a cotton scouring auxiliary. The leather industry is used for leather treatment, which can make the leather soft, plump, tough, waterproof, folding resistant, wear-resistant and other properties. Chemical industry is used to produce hydroxyvanillin, hydroxylamine hydrochloride, etc. The photosensitive industry is used as developer, etc.
6.For analysis. preservative. Reducing agent. Antioxidant
Packaging
25kg/bag
Shipment
Why choose us
Company Introduction
Hunan Mingray Trade 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, potassium hydroxide, 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.
Sales Team
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.