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Basic Info.
Model NO.
7681-57-4
Appearance
Powder
Grade Standard
Industrial Grade
Water Soluble
54 G/100 Ml
Density
1.48 g/cm3
Application 1
Antioxidants
Application 2
Food Additive
Transport Package
1) 25 Kg/Bag No Pallet: 27 Tons/Container Pallet:
Specification
25kg/50kg/1000kg
Trademark
choice-chem
Origin
China
HS Code
2832100000
Production Capacity
500 Metric Ton/Metric Tons / Day
Product Description
Company highlights view company profile > 
Verified Certifications (0) Product Details
Overview
Quick Details
Employees
201-300
R&D staffs
1-4
Patents
-
Verified Certifications (0)
-
| Chemical name | Sodium Metabisulfite |
| Molecular Formula | Na2S2O5 |
| CAS | 7681-57-4 |
| Character | White or yellow crystalline powder or small crystalline, with a strong smell of sulfur dioxide, it is soluble in water. |
| | In food industry, it is used as bleaching agents, preservatives, loosen agents, antioxidants, color protecting agents and preservatives. |
| The Doctor industry is used for the production of chloroform, phenylpropane and benzaldehyde. | |
| The rubber industry is used as a coagulant. | |
| The printing and dyeing industry is used as a dechlorination agent for cotton bleaching and a cotton cooking agent. | |
| Tannery industry for leather treatment, can make leather soft, plump, tough, with waterproof, anti - folding, wear resistance and other properties. |
Overview
Quick Details
| Classification: | Sulphate | Type: | Sodium Metabisulfite |
| CAS No.: | 7681-57-4 | Other Names: | Sodium Metabisulphite, SMBS, Sodium pyrosulfite |
| MF: | Na2S2O5 | EINECS No.: | 231-673-0 |
| Place of Origin: | Hunan, China | Grade Standard: | Agriculture Grade, Food Grade, Industrial Grade, Reagent Grade |
| purity: | 97%min | Appearance: | White Powder or Yellow crystalline powder |
| Application: | Water, Dyeing, Gold, food, Photography... | Brand Name: | Choice Chem |
| Model Number: | Sodium Metabisulphite | Product name: | Sodium Metabisulphite SMBS |
| Smell: | strong smell of sulfur dioxide | Content: | 97%min |
| SO2: | 66.8% | Fe: | 0.0015 |
| Pb: | 0.0002 | As: | 0.0001 |
| Water soluble: | 20°C, 54g/100ml water | Usage 1: | Raw materials of sodium hydrosulfite and caprolactam |
| Chemical Analysis- Sodium metabisulphite Industrial Grade | ||
| Component | Standard | Result |
| Appearance | white or yellowwish crystalline powder | Confirm |
| Content | ≥96.5% | 98.00% |
| Fe | ≤0.005 | 0.0015 |
| Water insoluble matter | ≤0.05 | confirm |
| Pb | ≤0.0005 | 0.0002 |
| As | ≤0.0001 | 0.0001 |
| SO2 | >65% | 66.8% |
| PH Value | 4.0-4.6 | 4.4 |
| Water soluble | 20ºC,54g/100ml water | Confirm |
| Chemical Analysis- Sodium metabisulphite Food Grade | ||
| Component | Standard | Result |
| Appearance | white or yellowwish crystalline powder | Confirm |
| Content | ≥96.5% | 98.50% |
| Fe | ≤0.003 | 0.0015 |
| Clarity | Clarify | confirm |
| Pb | ≤0.0005 | 0.0002 |
| As | ≤0.0001 | 0.0001 |
| SO2 | >65% | 66.8% |
| PH Value | 4.0-4.6 | 4.3 |
| Water soluble | 20ºC,54g/100ml water | Confirm |
Supply Ability
Supply Ability 500 Metric Ton/Metric Tons per Day
Packaging & Delivery
Packaging Details 25KG/PP Bags, 27MT/20'FCL
25KG/PE Bags, 27MT/20'FCL
In 1.25MT jumbo bags, 25MT/20'FCL
Port Yueyang, China
Own brand "ChoiceChem" PE Bag. N.W 25kg
25KG/PE Bags, 27MT/20'FCL
In 1.25MT jumbo bags, 25MT/20'FCL
Port Yueyang, China
Own brand "ChoiceChem" PE Bag. N.W 25kg
Plastic Woven Bag - N.W 25kg
Jumbo Bag - N.W [1000kg, 1200kg, 1250kg]
OEM package process
1. Free design service from ChoiceChem marketing department after confirming order;
2. Customer confirm the package design;
3. MOQ of OEM package: 1000pcs. for 25kg bags
2. Customer confirm the package design;
3. MOQ of OEM package: 1000pcs. for 25kg bags
1. All raw materials must be inspected prior to transferring to warehouse. 2. With regarding to the incoming materials which are not able pass the incoming inspection. Engineers will evaluate its quality and decide if they could be used for production or need to be returned to suppliers. 3. With regarding to NG materials, SQE organizes MRP meeting with suppliers and request them for 8D report and improvement plan. SQE | 1. Monitor equipment temperature and other index every 2 hrs, keep result in record. 2. Assign staff for each shift to record the equipment working status. It is requested to stop production machine working once abnormal condition found. | 1. Randomly pick out 5 pcs samples for final inspection for each batch, and only they all passed, then can be moved to qualified area. 2. If NG products found, put them at unqualified area, and let R&D department, production team and QC team review together for sorting out root cause and arranging improvement action plan. NG |
You may want to know...
1.How do you control your quality?
(1). ChoiceChem only use high purity raw material
A. Using 99.8% pure imported S. The high purity S allows the generation of very high purity SO2 which is further used to making high purity sodium sulphite than usually obtained.
ChoiceChem sodium sulphite's purity is commonly measured above 98%, which is substantially higher than Chinese national standard of 96%.
B.Using high purity soda ash, the soda ash which ChoiceChem use has an alkali content of more than 99.2%, and NaCl content of less than 0.97%.
Our high purity soda ash help us produce higher purity sodium sulphite, and can avoid impurities (like Cl and Iron), which allows our products to better meet pulp industrial requirements.
(2). Strict Factory Inspection System
All products are tested every 2 hours, and substandard products are allowed to leave the factory. We also have third-party tests carried out every 3 days,
to ensure our in-house tests are properly calibrated and accurate.
(3). Strict package and loading system
ChoiceChem only use high quality package and packing the cargo after cooling totally, to avoid expansion caused by SO2. The cargo be loaded in our factory directly, whole loading process be inspected by supervisor.
2.What is your delivery time?
(1).Our delivery time is updating according to order situation everyday.
(2).Current output is 300MT/day, allowing most cargo orders to be delivered within 7-10 days usually.
If it is China Entry-Exit Inspection and Quarantine (CIQ) inspection cargo,extra one week will be required for applying and accepting CIQ inspection.
If need OEM package, for colorful package, to engrave (for printing) need around 5-7 days, printing bags need around 1-3 days, domestic transportation need around 3-5 days, so extra 2 weeks will be needed;
for black color marks package, to engrave (for printing) need around 1-2 days, printing bags need around 1-3 days, domestic transportation need around 3-5 days, so extra 7-10 days will be needed;
Would you please inform us your purchase quantity and your expectation for receiving the cargo?
Please contact our sales representative and will check it for you immediately.
3.How you make sure delivery is on time?
(1) Our output is 300MT/day, allowing most cargo orders to be delivered within 7-10 days usually.
(2) ChoiceChem average rate of on time deliveries has remained above 98.9% in the past 3 years.
(3) We further promise that if delivery is not made in time, we will provide compensation at the rate of 0.25% of the contract amount per week.
4.Can you do OEM package?
Yes, we can do OEM pacakge per your request.
ChoiceChem also offer free package designing service after you decide to working with us, our professional marketing team will help you to build your own brand in your market.
5.What's MOQ for OEM package?
The MOQ is 5000pcs. bags usually, but if only 1000pcs. bags, we also can do it.
6.Do you have stock?
1.We sell good and always got orders in line before production, so we don't have stock, all produce are according to the customer's orders.
2.Our goods storage time is less than 3 days, to maintain the freshness of the goods.
3.Our output is 300MT/day, allowing most cargo orders to be delivered within 7-10 days.May I know when you need the cargo?
7.I need do registration before importing, can you support registration?
Could you please tell us your full registration documents requirements? I will check with our registration department for you and try our best to help finish registration soon.
8.Are you factory?
1. We are biggest sodium metabisulphite producer in the south of China for more than 20 years.
2.Compared with common sodium metbisulphite, our big advange is purity commonly measured above 97.5%, which is substantially higher than the national standard of 96% & whiteness can be controlled to meet printing,dyeing industrial etc.requirements better.
3.Welcome contact our sales representive for more information about our factory.
Please feel free to contact us get more specification : )
(1). ChoiceChem only use high purity raw material
A. Using 99.8% pure imported S. The high purity S allows the generation of very high purity SO2 which is further used to making high purity sodium sulphite than usually obtained.
ChoiceChem sodium sulphite's purity is commonly measured above 98%, which is substantially higher than Chinese national standard of 96%.
B.Using high purity soda ash, the soda ash which ChoiceChem use has an alkali content of more than 99.2%, and NaCl content of less than 0.97%.
Our high purity soda ash help us produce higher purity sodium sulphite, and can avoid impurities (like Cl and Iron), which allows our products to better meet pulp industrial requirements.
(2). Strict Factory Inspection System
All products are tested every 2 hours, and substandard products are allowed to leave the factory. We also have third-party tests carried out every 3 days,
to ensure our in-house tests are properly calibrated and accurate.
(3). Strict package and loading system
ChoiceChem only use high quality package and packing the cargo after cooling totally, to avoid expansion caused by SO2. The cargo be loaded in our factory directly, whole loading process be inspected by supervisor.
2.What is your delivery time?
(1).Our delivery time is updating according to order situation everyday.
(2).Current output is 300MT/day, allowing most cargo orders to be delivered within 7-10 days usually.
If it is China Entry-Exit Inspection and Quarantine (CIQ) inspection cargo,extra one week will be required for applying and accepting CIQ inspection.
If need OEM package, for colorful package, to engrave (for printing) need around 5-7 days, printing bags need around 1-3 days, domestic transportation need around 3-5 days, so extra 2 weeks will be needed;
for black color marks package, to engrave (for printing) need around 1-2 days, printing bags need around 1-3 days, domestic transportation need around 3-5 days, so extra 7-10 days will be needed;
Would you please inform us your purchase quantity and your expectation for receiving the cargo?
Please contact our sales representative and will check it for you immediately.
3.How you make sure delivery is on time?
(1) Our output is 300MT/day, allowing most cargo orders to be delivered within 7-10 days usually.
(2) ChoiceChem average rate of on time deliveries has remained above 98.9% in the past 3 years.
(3) We further promise that if delivery is not made in time, we will provide compensation at the rate of 0.25% of the contract amount per week.
4.Can you do OEM package?
Yes, we can do OEM pacakge per your request.
ChoiceChem also offer free package designing service after you decide to working with us, our professional marketing team will help you to build your own brand in your market.
5.What's MOQ for OEM package?
The MOQ is 5000pcs. bags usually, but if only 1000pcs. bags, we also can do it.
6.Do you have stock?
1.We sell good and always got orders in line before production, so we don't have stock, all produce are according to the customer's orders.
2.Our goods storage time is less than 3 days, to maintain the freshness of the goods.
3.Our output is 300MT/day, allowing most cargo orders to be delivered within 7-10 days.May I know when you need the cargo?
7.I need do registration before importing, can you support registration?
Could you please tell us your full registration documents requirements? I will check with our registration department for you and try our best to help finish registration soon.
8.Are you factory?
1. We are biggest sodium metabisulphite producer in the south of China for more than 20 years.
2.Compared with common sodium metbisulphite, our big advange is purity commonly measured above 97.5%, which is substantially higher than the national standard of 96% & whiteness can be controlled to meet printing,dyeing industrial etc.requirements better.
3.Welcome contact our sales representive for more information about our factory.
Please feel free to contact us get more specification : )