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Factory Direct 99% Purity Pentahydrate Grade Big Small Granule Sodium Thiosulfate
US$160.00-230.00
20 Tons
Product profile
Customization
AvailableCAS No.
10102-17-7Formula
Na2s2o3 . 5H2OModel NO.
99% minEINECS
231-867-5Appearance
Colorless Transparent CrystalClassification
Inorganic SaltCertification
ISO, ReachPurity
≥99%Type
Sodium ThiosulfateGrade Standard
Industrial Grade / Photo GradeOther Names
Sodium Thiosulphate, HypoApplication
Water Treatment, Leather Tanning, Aquaculture etcWater Solubility
Easily Soluble in WaterShelf Life
One YearSize
1-3mm, 2-4mm, 4-7mmMolecular Weight
248.18 G/MolDensity
1.667 G/Cm³Melting Point
48 ℃Boiling Point
100 ℃Storage Condition
in a Cool and Dry PlaceTransport Package
25kg Neutral Woven Bags/Jumbo BagsSpecification
99% minTrademark
WeichuangOrigin
ChinaHS Code
28323000Production Capacity
3000tons/MonthKey features
Customizable Sizes: Granule sizes available in 1-3mm, 2-4mm, and 4-7mm to suit different applications.
Global Certifications: Certified with ISO 9001:2015, EU REACH, and UK REACH for quality assurance.
Versatile Applications: Ideal for water treatment, leather tanning, aquaculture, photography, and plating.
Flexible Packaging: Standard 25kg bags or 1000-1250kg jumbo bags; custom packaging available upon request.
Fast Delivery: Standard delivery time is 15 days with convenient export logistics from Hunan port.
Free Sample Supply: Free samples provided for quality verification; buyer only covers freight charges.
Large Capacity: Monthly production capacity of 3000MT per product ensures stable supply.
Company profile
Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: >24h
AI-Powered supplier vetting
SummaryChangsha Weichuang Chemical Co., Ltd. is a China-based limited trading company established in 2007 with nine employees. It offers several chemical products and holds an ISO9001:2015 certificate. Service procedures for corrective actions, customer complaints, supplier approval, and service assessment are documented and followed, while overseas service coverage is absent. The supplier reports ODM, OEM, and sample/design customization capabilities, but no new products were developed in the past year and no SDK is available. Export sales represent 71%–90% of total sales, with self-managed import/export rights, although exporting began only one year ago. Lead times are stated as within 15 working days in both peak and off-season periods. Financial records are identified for 2022–2024, but no financial results are provided. Production capacity, raw-material traceability, and customer-specific cases are not sufficiently documented.
CertificationsThe supplier holds an ISO9001:2015 certificate. A BV audit report is listed with validity from September 30, 2025 to September 29, 2026, but the audit result is recorded as “0” without an explanation of its meaning.
After-Sales capabilityDocumented and followed procedures exist for corrective and preventive actions, customer complaints, supplier approval, and service-capability assessment. However, the supplier has no overseas showroom, overseas agent or branch, or offline trade-show participation, and reports service coverage in zero countries.
R&D capabilityThe supplier reports one year of total R&D-engineer experience, no new product development in the past year, and no available SDK. It does offer ODM services, indicating some design-development support, but the evidence does not demonstrate strong ongoing innovation.
Customization capabilityThe supplier explicitly offers ODM services, OEM services for popular brands, and customization from samples and designs. These statements provide direct evidence of customization capability, although no project scale or technical details are supplied.
Product Q&A
Q:What is the minimum order quantity (MOQ)?
A:
The MOQ is 1 Container.
Q:What are the payment terms?
A:
We accept T/T, L/C, D/P, or other payment terms which can be negotiated.
Q:Can I get free samples?
A:
Yes, we can supply free samples; you only need to pay for the freight charge.
Q:What is the loading quantity for a 20GP container?
A:
Without pallets: 27MT for small/middle size, 25MT for big size. With pallets: 25MT for small/middle size, 23MT for big size.
Q:What are the available granule sizes?
A:
We offer three sizes: 1-3mm, 2-4mm, and 4-7mm.
Send Inquiry
*To:Changsha Weichuang Chemical Co., Ltd.
Changsha Weichuang Chemical Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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