Anhydrous Sodium Sulphite CAS. 7757-83-7 Sodium Sulfite

Name: Anhydrous Sodium Sulphite CAS. 7757-83-7 Sodium Sulfite
Brand: Choice Chemicals Ltd.
SKU: 2121247395

Hunan, ChinaChoice Chemicals Ltd.

US$400.00-600.00

27 Tons

Product profile

Customization

Available

CAS No.

7757-83-7

Formula

Na2so3

Model NO.

Sodium Sulfite Anhydrous

EINECS

231-821-4

Certification

ISO

Purity

90%~99%

Type

Sodium Sulfite

Appearance

Powder

Grade Standard

High Purity Grade

Character

White Crystalline Powder

National Standard

GB1886.8-2015

Na2so3

97%Min.

Quality Assurance

ISO-9001

Raw Materials

Sulphur and Soda Ash

Transport Package

PP Jumbo Bag

Specification

25/ 50/ 1000 kg/bag

Trademark

ChoiceChem

Origin

HS Code

28321000

Production Capacity

300mt/Day

Key features

High Purity Options: Available in 96%, 97%, and 98% purity grades with Na2SO3 content up to 98.37%.

Strict Quality Control: Tests conducted every 2 hours with third-party verification every 3 days.

Fast Delivery: 300MT daily output ensures most orders ship within 7 days with 98.9% on-time rate.

OEM Packaging: Custom packaging options available including ChoiceChem brand and OEM services.

Wide Application: Used in pulp, water treatment, photography, textiles, leather, and food preservation.

ISO Certified: Manufactured under ISO-9001 quality assurance with GB1886.8-2015 standard compliance.

Company profile

Importers and ExportersManagement Certification

Choice Chemicals Ltd.

Hunan, China

Business Type: Manufacturer/FactoryExport Year: 2012-06-28Nearest Port: Yueyang,China, Shanghai,ChinaAverage Response Time: ≤5.06hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAP, FCA

AI-Powered supplier vetting

SummaryChoice Chemicals Ltd. is a privately owned manufacturer/factory in Hunan, China, with 16 employees and stated production capacities for several sodium and magnesium sulfate products. It offers customization, ODM, and OEM services, and reports new-product development during the past year. The supplier has written procedures and records for service assessment, corrective/preventive actions, and complaint handling. ISO 9001:2015 certification is reported. Financial records are identified for 2021–2023, but no financial results are provided. The supplier lacks 3D software design, SDK, overseas warehouse, overseas showroom, and overseas agent or branch capabilities. No specific customer names or verifiable customer cases are provided.

Supplier typeThe supplier is identified as a Manufacturer/Factory and a private limited company in Hunan, China. Its stated business scope includes chemical product offerings together with import/export, equipment sales, information technology consulting, and technical services.

CertificationsThe supplier reports holding an ISO 9001:2015 certificate. No other certification details, scope, issuing body, or validity information are provided.

After-Sales capabilityThe supplier has written procedures and followed records for service-capability assessment, corrective and preventive actions, and customer complaint handling. However, it has no overseas warehouse, showroom, agent, or branch, which limits documented overseas service infrastructure.

R&D capabilityThe supplier reports new products during the past year and provides ODM and OEM services. Conversely, it is explicitly not a professional technical supplier, does not provide 3D software design services, and has no available SDK; therefore, innovation evidence is present but technically limited.

Production capacityThe supplier is identified as a factory and reports annual capacities of 200,000 tons of sodium metabisulphite, 50,000 tons of sodium bisulphite, 50,000 tons of sodium sulphate, and 80,000 tons of magnesium sulfate heptahydrate. These stated capacities provide explicit evidence of substantial production capability.

Customization capabilityThe supplier states that it can customize from samples and designs, provide full, minor, and flexible customization, and offer ODM and OEM services. It does not provide 3D software design services, so customization is supported but not through that specific design tool capability.

Product Q&A

Q:What are the available purity grades?

Sodium Sulphite is available in 96%, 97%, and 98% grades. The 98% grade typically contains 98.37% Na2SO3, exceeding the national standard of 96%.

Q:What is the lead time for delivery?

With a daily output of 300MT, most cargo orders can be delivered within 7 days. The average on-time delivery rate is above 98.9%.

Q:What happens if delivery is delayed?

We guarantee on-time delivery. If delayed, we provide compensation at 0.25% of the contract amount per week.

Q:Is OEM packaging available?

Yes, OEM packaging is available. We offer ChoiceChem brand packages and can customize packaging according to customer requirements.

Q:What are the main applications of Sodium Sulphite?

It is used in pulp and paper (lignin removal), water treatment (oxygen scavenger), photography, textiles (bleaching), leather trade, and as a food preservative.