odium Hydrosulfite
CAS NO. | 7775-14- 6 | HS.CODE | 28311010 |
EINECS NO. | 231-890-0 | HAZARD CLASS | 4.2 |
UN NO. | 1384 | Storage Condition | Store at +5°C to +30°C |
APPEARANCE | White to Gray-White crystalline powder | ||
Odor | Odorless or a slight odor of SO2 gas | ||
Solubility | Easily Soluble in Water, Insoluble in Ethanol | ||
Standards Code Conformed | HG/T2074-2011 for industrial use | ||
Stability | Stable, but air sensitive. Incompatible with strong acids, strong oxidizing agents, water, moisture. | ||
Sensitive | Moisture Sensitive | ||
Use | Mainly used as printing and dyeing reducing agent, Pulp, hemp, oil and other bleaching agents, and for pharmaceutical, Analytical reagents, etc |
ITEM | UNIT | STANDARD | STANDARD | STANDARD | STANDARD |
Sodium Hydrosulphit e:Na 2 S 2 O 4 | % | 74 min | 85 min | 88 min | 90 min |
Water insoluble | % | 0.1 max | 0.05 max | 0.05 max | 0.05 max |
Sodium thiosulfate: Na 2 S 2 O 3 | % | 1.20 max | 1.20 max | 1.0 max | 0.8 max |
Sodium metabisulfite: Na 2 S 2 O 5 | % | 5-7 | 5-7 | 5-7 | 5-7 |
Sodium bisulfit e:Na 2 SO 3 | % | 0.5 max | 0.5 max | 0.4 max | 0.3 max |
Sodium carbonate: Na 2 CO 3 | % | 0.6-7 max | 0.6-7 max | 0.6-7 max | 0.6-7 max |
Zinc(Zn) | % | 1ppm max | 1ppm max | 1ppm max | 1ppm max |
Other heavy metal (calculated as Pb) | % | 1ppm max | 1ppm max | 1ppm max | 1ppm max |
Fe | % | 20ppm max | 20ppm max | 20ppm max | 20ppm max |
1. Weight <1kg ---- Fluorinated bottle
2. 25kg ---- Plastic bucket
3. 180- 200kg ---- Drum
P.S.: we accept packaging customization.
4.We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.
5.Shipping details & shipping documents will be provided and sent to customers as long as it is ready.
6.We keep tracking the shippment until clients well received.
7.After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently.
Hebei Rongxintong Industrial Co., Ltd. is the specialized chemical, processing and sales enterprise.
our products enjoy good reputation both at home and abroad.Our trade partners are around the world, mainly in America,Europe,Australia,South East Asia ,Middle East and South Africa. In order to serve customers well, the company has established special technical department and after-sale service department. We will make careful reply if you get any question.
The company with all the employees will constantly purse excellent quality, perfect brand and our image, and adheres to our spirit of honesty, diligence, seeking truth and progress and insists on business philosophy of quality as life and service as soul. We will satisfy market demands by top products and better service, and will welcome market challenge forever.
1.Our product could meet various usa
ges from different customers and we produce and supply the same product as customer's sample.
2.We have strict control in quality and regard guide sample as production core.
3.Our product has good dispersibility and strict material control in iron sheet to prevent heavy metal out of limits.
Q1 :Can i get some samples?
A1 :Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2 :How to start orders or make payments?
A2 :Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union or Paypal.
Q3 :How to confirm the Product Quality before placing orders?
A3 :You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q4 :What's your MOQ?
A4 :Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q5 :How about delivery lead time?
A5 :Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)
Q6 :Is there a discount?
A6 :Different quantity has different discount.
Q7:How do you treat quality complaint
A7 :First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.