Sodium Hydrosulfite 88%
Chinese Name: sodium bisulfite (class 4.2 dangerous goods)
English Name: sodium hyposulfite
Other: Insurance powder
Chemical formula: Na2S2O4
Molecular weight: 174.108
Product Introduction
Product Introduction:
CAS accession No.: 7775-14-6
EINECS accession number: 231-890-0
Melt Point: 300 ℃
Outside Appearance: white sandy crystal or light yellow powder
Safety Description: toxic, burning or exploding in water, releasing toxic gas
Hazard Description: spontaneous combustion, explosion, toxicity and instability of aqueous solution
Dangerous goods transport No.: un1384
Ignition temperature: 250 ℃
UN No.: 1384
Product application
1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. It is also used in bleaching paper pulps , especially mechanical pulps, it's the most fittable bleaching agent in pulps.
3. It is used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. It is used in mineral, the compound of thiourea and other sulphides.
5. It is used as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.
| Specification | Tolerance | Result |
| Purity(wt%) | 88min | 88.78 |
| Na2CO3(wt%) | 2.53.0 | 2.72 |
| Na2S2O3(wt%) | 0.51 | 0.56 |
| Na2S2O5(wt%) | 5 7 | 6.68 |
| Na2SO3(wt%) | 0.51.5 | 0.63 |
| Fe(ppm) | 20ppm max | 16ppm |
| Water lnsoluble | 0.1 | 0.04 |
| Total other heavy metals | 10ppm max | 8ppm |
Q1.Are you a factory or trading company?
A:Yes,we are factory,but not just a factory,as we have sales team,own designers,ownshowroom ,can help buyers to decide which products are their best choice,and all your inquiry will be replyed within 24 hours.
Q2:Could you send me all your catalogues and price list?
A:As we have more than thousands of items,even 1 item have different size andpackage,it is really too hard for us to send you all our catalogue and price list for you.Please inform me the items,size and packages you interested in ,so we can offer you the price list you want for your reference .
Q3.How can I get some samples?
Kindly send us your address, we are honored to offer you samples.
Q4. How does your factory do regarding quality control?
Our factory has gained ISO9001 2008 and REACH
Q5:What's your Delivery Time?
In generally, the delivery time is 35 days-40 days.We will make the delivery as soonas possible with the guaranted quality.
Q6:What is the convenient way to pay?
A:L/C , T/T ,Paypal, Western Union and Escrow are accepted,and if you have better idea , please feel free to share with us
Q7:Which mode of transport would be better?
In general,we advice to make delivery by sea which is cheap and safe.Also we respect your views of other transportation as well.
Professional Loading:
1.We will provide you with professional loading
2.We have one team supervise uploading the materials. We will check the container, the packages
3.Every step, taking pictures and make records. 4.we will make a complete Loading Report for our customer of each shipment.
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