Гидросульфит натрия 85% 88% 90% по лучшей

Категория: Сульфат >>>
Поставщик: Hebei,Bossory,Chemicals,Technology,Co.,Ltd.

Цена:*

Количество:

Описание и отзывы

Трекер стоимости

Месяц	Минимальная цена	Макс. стоимость
Sep-17-2025	0.10 $*	0.11 $*
Aug-17-2025	0.72 $*	0.25 $*
Jul-17-2025	0.11 $*	0.55 $*
Jun-17-2025	0.74 $*	0.86 $*
May-17-2025	0.55 $*	0.80 $*
Apr-17-2025	0.55 $*	0.8 $*
Mar-17-2025	0.93 $*	0.9 $*
Feb-17-2025	0.87 $*	0.69 $*
Jan-17-2025	0.24 $*	0.9 $*

Характеристики

Sodium Hydrosulphite 85% 88% 90%

Molecular formula: Na2S2O4

Appearance: white free-flow crystal powders

Packing: 50kg or 100kg net in iron drums with double inner polybags.

Sodium Hydrosulphite 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 fitable 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 in dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.

Sodium Hydrosulfite (2).jpg Sodium Hydrosulfite (1).jpg

Product specifications:

INDEX	90%	88%	85%	FOOD ADDITIVE
Na2S2O4	≥90%	≥88%	≥85%	≥85%
Fe	≤20ppm	≤20ppm	≤20ppm	≤20ppm
Zinc(Zn)	≤1ppm	≤1ppm	≤1ppm	≤1ppm
Other heavy metal (calculated as Pb)	≤1ppm	≤1ppm	≤1ppm	≤1ppm
Water Insolubles	≤0.05%	≤0.05%	≤0.05%	≤0.05%
Shelf Life(month)	12	12	12	12

Analysis report:

ITEM	90%	88%	85%	FOOD ADDITIVE
Na2S2O4	91.00%	89.50%	86.60%	86.96%
Na2S2O5	6.39%	6.64%	6.82%	6.54%
Na2CO3	1.10%	2.50%	5.70%	5.58%
Na2S2O3	0.18%	0.20%	0.41%	0.38%
Na2SO3	0.22%	0.21%	0.32%	0.36%
Fe	14ppm	15ppm	16ppm	11ppm
Water Insolubles	0.05%	0.04%	0.04%	0.01%

Exhibition

exhibition 2

FAQ

Q1. What is the MOQ?
MOQ is 21.6 metric tons.

Q2. What countries and regions do you sell your products to?
Our products about 55% is sold in domestic mainland, about 45% is exported to other parts of the world, such as South America, southeast Asia, Russia, Japan, Africa and the Middle East.

Q3. What information should I let you know if I want to get a quotation?
Answer: -Quality you required, eg. Assay, Purity, or single impurity
Quantity you required.
Discharge port you required.

Q4. Do you provide samples ? is it free?
Yes, we offer free sample.

Q5. How to make the payment?
We can accept Trade Assurance, Bank Transfer and LC at sight.

Q6. Do you provide quality inspection?
Yes, our all goods can accepted SGS inspection, BV inspection or any third party inspection specified by the customer.

Q7. When will you deliver the goods?
For sample, in 1 working days after payment;
For larger orders (by sea), in about 7-10 working days after payment.

Q8. How will you deliver the goods?
We have good cooperation with DHL, TNT, UPS, FEDEX, EMS, China Air Post. For container products, we can do sea shipping. You also can choose your own shipping forwarder.