1.Product descriptions:

Chemical name: sodium bisulfate formaldehyde
Molecular formula: NaHSO2 · CH2O · 2H2O
Molecular weight: 154.12
Weight: 1.8
Melting point: 64 ° C
Melting heat: 54.84KJ / mol (13.2KCal / mol)
Moisture point: 60% relative humidity
Stability point: less than 50 ºC
Solubility: 20 ºC, 1 carved white block, carved white powder, carved white particles need 1.2 copies of water dissolved (45%)
70 ºC, a carved white block, carved white powder, carved white tablets need 1 part of water dissolved (50%)
Physical properties: carved white block, carved white powder, carved white particles with a strong reducing salt, white condensed lumps or powder, granules, was alkaline protection.
Chemical properties:
A. Carved white block (powder, grain) easy to damp exotherm, 80 ºC began to decompose, the release of H2S, need to dry low temperature preservation.
6NaHSO2 · CH2O + 3H2O - → 4NaHSO3 + 2HCOONa + 2H2S + HCOOH + 3CH3OH
B. When the temperature rose to 110 ºC, carved white block (powder, grain) decomposition, the molecules of formaldehyde split release new [H], the strongest reduction force.
NaHSO2 · CH2O - → NaHSO2 + CH2O
NaHSO2 + H2O - → NaHSO2 + 2 [H]
C. Carved white block (powder, grain) is divided into oxidants, such as with the I2.
NaHSO2 · CH2O + 2H2O + 2I2- → NaHSO4 + 4HI + CH2O
D. Carved white block (powder, grain) should be in alkaline medium PH> 8, acid (acid limit PH> 3) can make carved white block decomposition of hydrogen sulfide.



2.Specification:
 

3.Packing and storage:

With lined with plastic film bags, sealed tight iron drum, net weight 50 kg per barrel. Carved white powder and another 25 kg bag.

Carved white pieces of finished barrels should be stored in a dry and cool place to prevent sunlight exposure, rain, not with oxidants and acids mixed together, the storage room does not contain acid vapor, storage period of one year.




4.Product uses:

Mainly used in the printing and dyeing industry for the discharge agent, coloring agent, reducing agent and used as styrene-butadiene rubber and synthetic resin activator, but also for some organic decolorization and bleaching (such as: synthetic rubber, sugar, food industry bleaching Agent), under certain conditions can replace the use of insurance powder. Can not be used for imported food bleaching.
 

5.Why choose us:

1) More than ten years experience in chemicals industry;
2) Quick and positive reply after receiving your inquiry;
3) Free sample before shipment;
4) Quality control before and during shipment;
5) Packing according to your requirement;
6) Prompt shipment with right shipping line;
7) High quality with competitive price.

6.FAQ:

1.How many years have you been in this area?

We have been in chemical for 8 years though we just started to run business on Made-in-China for 1 year.

2.Do you offer free sample?will the postage be free?

We can offer not overn than 500g sample for free and the postage will be paid by us.However,if you asked more than that you need to pay for the postage and also sample.

3.Are you manufacturer or trading company?

We are trading company as you can see on Alibaba.But with 8 years experience you can trust us that we can offer reliable quality and service for you.

4.How can you guarantee the quality?

First of all we welcome any inspection for the quality such as BV or SGS.This is a normal way for international trade.Besides,you can choose the payment as Trade Assurance through Alibaba and with that you can get fully security from Alibaba to make sure the quality is good.

5.If we hope to visit the factory,can you arrange?

Yes of course,but we need you to confirm the order firstly for our own protection.Hope you can understand.

6.Do you have enough stock?

About that depends on your quantity.Plz confirm with our staff before you confirm order.We will be 24/7 on-line!

7.How can we confirm order on-line?

Plz confirm with our staff.

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