Top 10 Sodium Thiosulfate Suppliers for the Philippines 2026

Philippine buyers can source sodium thiosulfate from local chemical distributors, laboratory reagent suppliers and international bulk exporters.

The right supplier depends on the required product form, purity, packaging, order quantity and delivery model. This guide compares 10 potential sodium thiosulfate suppliers for Philippine importers, distributors, laboratories and industrial users.

Sodium Thiosulfate Suppliers at a Glance

Sodium Thiosulfate Demand in the Philippines

Sodium thiosulfate is used in water dechlorination, industrial wastewater treatment, textile processing, pulp and paper production, photography, analytical chemistry and other chemical processes.

According to WITS and UN Comtrade, the Philippines reported imports of approximately 178,766 kg under HS 283230 in 2024. China was the largest origin by quantity.

HS 283230 covers thiosulphates as a product group, so this figure should be treated as a market indicator rather than an exact measurement of sodium thiosulfate consumption.

How These Suppliers Were Selected

The suppliers were selected using publicly available information, including:

• Philippine local presence or international export coverage

• Availability of sodium thiosulfate product information

• Industrial, laboratory or bulk supply capability

• Product form and grade

• Packaging and documentation information

• Relevance to Philippine importers and distributors

The order is intended to organize the list and does not represent a verified ranking by sales volume or product quality. Buyers should confirm current availability, specifications and delivery capability directly with each supplier.

Disclosure: Aozun Chemical is the publisher of this guide and is included as one of the international bulk supply options.

Top 10 Sodium Thiosulfate Suppliers Serving the Philippines

1. SBS Philippines – Local Industrial Chemical Supply

SBS Philippines is a Philippine chemical distributor supplying products to industrial sectors such as water treatment, textiles, mining and manufacturing.

Its sodium thiosulfate page highlights applications in photography, dechlorination, chemical processing and medicine. However, the publicly available page does not specify the hydrate form, purity, packaging or MOQ.

Best for: Philippine buyers that prefer local communication and domestic supply arrangements.

2. TCI Chemicals – High-Purity Sodium Thiosulfate Pentahydrate

TCI Chemicals lists sodium thiosulfate pentahydrate with a minimum purity of 99.0%.

The product has CAS No. 10102-17-7 and is supported by specifications, certificates and safety information. Standard catalog quantities are intended mainly for laboratories, although buyers can request a bulk quotation.

Best for: Laboratories, quality-control departments and buyers requiring high-purity material in smaller quantities.

3. Aozun Chemical – China-Based Bulk Export Supplier

Aozun Chemical is a China-based chemical supplier and exporter offering industrial-grade sodium thiosulfate pentahydrate.

The listed specification includes a minimum purity of 98.0%, pH of 6.5–9.5, water-insoluble matter of no more than 0.03% and controlled sodium sulfide and iron content.

Aozun also supplies other inorganic and specialty chemical products, which may benefit distributors purchasing several chemical products through one export supplier.

Best for: Importers and chemical distributors requiring industrial-grade material and consolidated chemical sourcing.

4. Wego Chemical Group – Global Distribution and Supply Support

Wego Chemical Group is an international chemical supplier and distributor headquartered in the United States.

The company lists sodium thiosulfate pentahydrate and describes its ability to import, stock and distribute the product in multiple countries. Its business model is more focused on international supply-chain support than direct factory production.

Best for: Buyers that value global sourcing, inventory support and international distribution experience.

5. Muby Chemicals – Pentahydrate, Anhydrous and Multiple Grades

Muby Chemicals is an India-based manufacturer and exporter offering both sodium thiosulfate pentahydrate and anhydrous sodium thiosulfate.

Its public product information covers technical, pure, reagent, food and pharmacopoeial grades. Specifications, particle sizes and packaging may be adjusted according to the buyer’s requirements.

Best for: Buyers requiring a specific product form, purity standard or specialized grade.

6. Chang Zhou Qi Di Chemical – Industrial-Grade Bulk Supply

Chang Zhou Qi Di Chemical is a China-based chemical supplier established in 2003. Its products are marketed to customers in Southeast Asia and other international regions.

The company lists sodium thiosulfate pentahydrate under CAS No. 10102-17-7. Its standard industrial specification includes a minimum purity of 98%, with 25 kg bag packaging available for bulk orders.

Best for: Southeast Asian distributors and industrial buyers seeking standard bulk sodium thiosulfate pentahydrate.

7. Scharlab Philippines – Analytical and Reagent Grades

Scharlab Philippines supplies analytical chemicals through its Philippine office in Quezon City.

Its sodium thiosulfate pentahydrate is listed for analytical use and complies with standards including ACS, ISO and Reag. Ph. Eur. Available laboratory packaging includes 500 g and 1 kg containers, with access to TDS, COA and SDS documentation.

Best for: Philippine laboratories, universities and industrial quality-control departments.

8. Vinipul Chemicals – India-Based Manufacturer and Exporter

Vinipul Chemicals is an Indian chemical manufacturer, supplier and exporter.

The company lists sodium thiosulfate in several physical forms and packaging options, including 25 kg and 50 kg bags. Its website covers industrial applications, product properties and purchasing information.

Buyers should confirm the exact hydrate form, CAS number and assay in the quotation and COA.

Best for: Buyers comparing alternative Asian export suppliers and flexible packaging options.

9. Tradeasia International – Regional Industrial Sourcing

Tradeasia International supplies industrial chemicals through an international distribution network.

Its product page lists anhydrous sodium thiosulfate under CAS No. 7772-98-7, with 25 kg PP bags and approximately 25 metric tons per 20-foot container. TDS and SDS documents are also available through the website.

Best for: Buyers specifically requiring anhydrous sodium thiosulfate and regional supply-chain support.

10. Weifang DayooChem – Granular Sodium Thiosulfate Pentahydrate

Weifang DayooChem is a China-based manufacturer specializing in sodium thiosulfate pentahydrate.

The company offers small, medium and large granular products. It reports annual production capacity above 30,000 metric tons and provides several international delivery terms. Buyers should verify current capacity, lead time and Philippine shipping terms before ordering.

Best for: Large-volume buyers requiring a specific crystal or granule size.

Pentahydrate vs Anhydrous Sodium Thiosulfate

Philippine buyers should clearly state the required form in every inquiry.

Sodium thiosulfate pentahydrate is commonly supplied as industrial crystals. Anhydrous sodium thiosulfate may be selected when the buyer requires a water-free product or a higher active content by weight.

The CAS number, molecular formula and assay should always match the actual product form on the COA and packaging label.

What Philippine Buyers Should Compare Before Ordering

Before choosing a supplier, compare the following:

• Pentahydrate or anhydrous form

• Industrial, reagent or pharmacopoeial grade

• Purity and impurity limits

• Crystal or particle size

• Packaging type and net weight

• Minimum order quantity

• Pallet and container-loading options

• Production and delivery lead time

• COA, SDS, TDS and certificate of origin

• Product sample availability

• FOB, CIF or other Incoterms

• Destination port and estimated freight cost

A lower product price does not always mean a lower landed cost. Philippine buyers should calculate freight, customs clearance, local delivery and inventory requirements before comparing quotations.

Local Distributor or Direct Import?

A local Philippine supplier may be more suitable when:

• The required quantity is small

• Delivery is urgent

• Local payment and invoicing are preferred

• The buyer does not have an established import process

Direct import may be more suitable when:

• Demand is stable and relatively large

• Full-pallet or full-container purchasing is possible

• A specific grade or particle size is required

• The buyer can manage customs clearance and inventory

• Long-term distributor pricing is the priority

Importers and distributors should compare the complete landed cost instead of comparing only the FOB price.

What to Include in a Sodium Thiosulfate RFQ

A complete request for quotation should include:

• Product name and hydrate form

• CAS number

• Required purity or grade

• Intended application

• Order quantity and annual demand

• Preferred packaging

• Required particle size

• Destination port

• Requested Incoterm

• Required documents

• Expected delivery date

Providing this information helps suppliers issue a more accurate quotation and reduces unnecessary follow-up communication.

Frequently Asked Questions

What form of sodium thiosulfate is commonly sold as hypo?

Hypo generally refers to sodium thiosulfate pentahydrate, with CAS No. 10102-17-7. It is commonly supplied as colorless transparent crystals.

What is the difference between CAS 10102-17-7 and CAS 7772-98-7?

CAS 10102-17-7 refers to sodium thiosulfate pentahydrate. CAS 7772-98-7 refers to anhydrous sodium thiosulfate. Buyers should not use the two CAS numbers interchangeably.

What documents should Philippine importers request?

Typical documents include a current COA, SDS, TDS, commercial invoice, packing list and certificate of origin. Additional documents may depend on the product grade, application and Philippine import requirements.

Can Philippine buyers import sodium thiosulfate directly from China?

Yes. Direct imports may be practical for pallet or container quantities. Buyers should confirm the supplier’s export capability, product specifications, packaging, Incoterms and documentation before placing an order.

Request a Sodium Thiosulfate Quotation

Aozun Chemical supplies industrial-grade sodium thiosulfate pentahydrate for international buyers.

For an accurate quotation, please provide your required purity, quantity, packaging, destination port and preferred Incoterm.

Contact Aozun Chemical to request the latest specification, COA and commercial quotation.