Top 10 TSPP Manufacturers & Suppliers Japan 2026

Top 10 Tetrasodium Pyrophosphate (TSPP) Manufacturers & Suppliers Serving Japan in 2026

Tetrasodium pyrophosphate, commonly abbreviated as TSPP, is an inorganic phosphate used in food processing, detergents, water treatment, metal cleaning, ceramics, personal-care formulations and industrial chemical production.

Its chemical formula is Na4P2O7. The anhydrous product normally uses CAS 7722-88-5, while tetrasodium pyrophosphate decahydrate uses CAS 13472-36-1.

Japan has several established phosphate manufacturers, but the market also includes Japanese repackers, laboratory reagent companies and international suppliers. Buyers must therefore determine whether a company is the original manufacturer, a local distributor or a laboratory-scale supplier.

This guide compares 10 manufacturers and suppliers according to their published product information, grade range, packaging, documentation and suitability for Japanese buyers.

Quick Answer: Who Manufactures TSPP in Japan?

Taihei Chemical Industrial, Rin Kagaku Kogyo and Nippon Chemical Industrial are among the clearest Japanese manufacturers of sodium pyrophosphate or tetrasodium pyrophosphate.

ICL Japan and Union provide important local supply, food-additive or repacking channels. Kanto Chemical, Tokyo Chemical Industry, Junsei Chemical and Hayashi Pure Chemical serve laboratory and smaller-volume requirements.

For buyers seeking export-oriented commercial supply from China, AoZun Chemical offers food-grade and industrial-grade TSPP and can prepare quotations for shipments to Japan.

TSPP Product Facts at a Glance

In English-language procurement documents, “pyrophosphate” is the correct spelling. “Pirofosfat” is used in languages such as Indonesian but should not replace “pyrophosphate” in an English page title.

Top 10 TSPP Manufacturers and Suppliers Serving Japan

The numerical order represents editorial relevance to Japanese sourcing requirements. It is not an audited market-share or product-quality ranking.

How We Selected the Companies

The suppliers were evaluated using the following criteria:

• An identifiable TSPP or sodium pyrophosphate product

• Correct chemical formula or CAS number

• Manufacturing, stocking or practical supply capability

• Relevance to customers in Japan

• Published product form or grade

• Availability of an SDS, specification or COA

• Packaging suitable for industrial or laboratory buyers

• Traceable company and contact information

• Product information accessible in 2026

Companies listing only sodium acid pyrophosphate, sodium tripolyphosphate or tetrapotassium pyrophosphate were not treated as TSPP suppliers.

1. Taihei Chemical Industrial Co., Ltd.

Location: Japan
Supplier type: Primary phosphate manufacturer
Best for: Japanese buyers requiring commercial 25 kg packaging

Taihei Chemical Industrial manufactures both anhydrous and crystalline sodium pyrophosphate products.

Its anhydrous TSPP product is identified as:

• Product name: Sodium Pyrophosphate, Anhydrous

• Alternative name: Tetrasodium Pyrophosphate, Anhydrous

• CAS number: 7722-88-5

• Formula: Na4P2O7

• Packaging: 25 kg paper bag

• Available specifications: food additive, quasi-drug raw material and industrial grade

Published applications include meat binding, noodle processing, casein thickening, peroxide stabilization, detergent building, dyeing, sequestration, boiler cleaning and polymer-production auxiliaries.

The company also provides samples for selected product-development and formulation trials.

2. Rin Kagaku Kogyo Co., Ltd.

Location: Japan
Supplier type: Primary phosphate manufacturer
Best for: Food processors, cleaning-product manufacturers and water-treatment buyers

Rin Kagaku Kogyo is an established Japanese producer of condensed phosphate products.

Its sodium pyrophosphate product has the formula Na4P2O7 and is also identified as tetrasodium pyrophosphate. The published commercial package is a 25 kg paper bag with a polyethylene inner liner.

Applications identified by the manufacturer include:

• Food processing

• Emulsification

• Brine formulations

• Water treatment

• Boiler cleaning

• Detergent production

• Peroxide stabilization

Its domestic manufacturing position and commercial packaging make it a relevant candidate for industrial Japanese buyers.

3. Nippon Chemical Industrial Co., Ltd.

Location: Tokyo, Japan
Supplier type: Primary chemical manufacturer
Best for: Food manufacturers seeking Japanese-produced phosphate ingredients

Nippon Chemical Industrial manufactures a broad range of phosphorus compounds. Its food-grade sodium phosphate portfolio includes sodium pyrophosphate under CAS 7722-88-5.

The published product information includes:

• Product name: Sodium Pyrophosphate

• Formula: Na4P2O7

• Grade: Food grade

• Packaging: 25 kg paper bag

• Main application: Food additives

This supplier is especially relevant to Japanese food manufacturers that prioritize domestic sourcing, Japanese documentation and established quality-control systems.

Buyers should request the current product specification, COA, allergen statement, manufacturing-site information and other documents required for their specific application.

4. Changzhou AoZun Composite Material Co., Ltd.

Location: Changzhou, Jiangsu, China
Supplier type: Export-oriented producer and chemical supplier
Best for: Importers, distributors and commercial TSPP buyers

AoZun Chemical supplies tetrasodium pyrophosphate under CAS 7722-88-5 for food, detergent, water-treatment, ceramic and general industrial applications.

The product is available as a white crystalline powder or granular material. It functions as a buffering agent, dispersant, emulsifier and metal-ion sequestrant.

AoZun publishes typical purity options of at least 94% for selected food-grade material and at least 98% for industrial-grade material. Because specifications vary according to grade, the quotation and approved specification should identify the precise assay, P2O5 content, pH, loss on drying, heavy metals and particle size.

Potential advantages for Japanese buyers include:

• Export-oriented commercial support

• Food and industrial-grade options

• Sample and specification requests

• Flexible packaging discussions

• Customized labeling subject to order requirements

• Consolidated sourcing for multiple chemicals

• COA, SDS and export documentation support

• Commercial supply for recurring orders

AoZun is based in China and is not presented as a Japanese manufacturer. It is included as an international supplier serving importers, distributors and industrial customers purchasing for Japan.

For specifications, samples or pricing, visit the AoZun Tetrasodium Pyrophosphate product page.

5. ICL Japan Co., Ltd.

Location: Japan, supported by an international phosphate network
Supplier type: Local supplier and international manufacturer channel
Best for: Food, detergent and industrial formulators

ICL Japan lists anhydrous tetrasodium pyrophosphate in its food-additive and industrial phosphate portfolios.

The product is identified using the following names:

• Sodium Pyrophosphate, Anhydrous

• Tetrasodium Pyrophosphate, Anhydrous

• ピロリン酸四ナトリウム（無水）

• Formula: Na4P2O7

ICL Japan also supplies related phosphate ingredients. It can therefore be considered by formulators purchasing TSPP together with STPP, SAPP, SHMP or potassium phosphate products.

Buyers should confirm the manufacturing country, current specification, packaging, available stock and applicable food-additive documentation.

6. Union Co., Ltd., Omichi Pharmaceutical Group

Location: Japan
Supplier type: Food-additive processor, blender and repacker
Best for: Smaller lots, customized blends and repacked materials

Union processes and repacks phosphates, food ingredients and other food additives. Its portfolio includes sodium pyrophosphate and related pyrophosphate salts.

The company’s capabilities include:

• Food-additive mixing

• Small-lot packaging

• Repacking

• Customized phosphate blends

• Different packaging sizes

• Local Japanese production support

• Food-additive quality management

Union may not be the primary manufacturer of every phosphate it processes. Buyers should request the original manufacturer, manufacturing country and raw-material specification when supply-chain traceability is required.

7. Kanto Chemical Co., Inc.

Location: Tokyo, Japan
Supplier type: Reagent and food-additive supplier
Best for: Product development, quality control and small-volume food applications

Kanto Chemical supplies crystalline tetrasodium pyrophosphate as a food-additive-grade product.

The product is the decahydrate form:

• Product: Tetrasodium pyrophosphate decahydrate

• CAS number: 13472-36-1

• Formula: Na4P2O7·10H2O

• Grade: Food additive

• Assay: More than 97% on an anhydrous basis

• Package: 500 g

Product documents include an SDS, specification and inspection certificate.

The 500 g package is most suitable for laboratory evaluation, product development and small-batch applications rather than tonne-scale industrial purchasing.

8. Tokyo Chemical Industry Co., Ltd.

Location: Tokyo, Japan
Supplier type: Laboratory reagent manufacturer
Best for: Research, analytical work and chemical-development laboratories

Tokyo Chemical Industry, commonly known as TCI, supplies anhydrous sodium pyrophosphate under product code O0748.

Published product information includes:

• CAS number: 7722-88-5

• Formula: Na4P2O7

• Purity: More than 98%

• Appearance: White to almost-white powder or crystals

• Package sizes: 25 g and 500 g

• Storage: Protected from moisture

TCI provides product specifications, SDS documents and certificate services through its Japanese sales system.

This is primarily a research reagent. It should not automatically be treated as a food-additive product.

9. Junsei Chemical Co., Ltd.

Location: Japan
Supplier type: Reagent supplier
Best for: Japanese laboratories and quality-control departments

Junsei Chemical supplies sodium pyrophosphate decahydrate under CAS 13472-36-1.

The published product includes:

• Formula: Na4P2O7·10H2O

• Minimum assay: 98%

• Package size: 500 g

• SDS availability

• Product-specification documentation

• Laboratory and quality-control positioning

Because this product is the decahydrate, its price per kilogram should not be compared directly with anhydrous TSPP.

Buyers must account for the crystal water and compare products according to equivalent active Na4P2O7 content.

10. Hayashi Pure Chemical Ind., Ltd.

Location: Osaka, Japan
Supplier type: Reagent manufacturer and supplier
Best for: Laboratories and controlled small-batch applications

Hayashi Pure Chemical supplies sodium diphosphate decahydrate, also known as sodium pyrophosphate decahydrate.

Its first-grade product includes:

• CAS number: 13472-36-1

• Formula: Na4P2O7·10H2O

• Minimum assay: 98%

• Package size: 500 g

• Reference to JIS K 8785

• Japanese and English SDS

• Japanese and English specifications

• Inspection-certificate access

The product specification includes limits or test requirements for pH, chloride, orthophosphate, sulfate, heavy metals, arsenic and iron.

Anhydrous TSPP vs. TSPP Decahydrate

This is one of the most important distinctions when comparing suppliers.

Anhydrous TSPP

Anhydrous TSPP has the formula Na4P2O7 and molecular weight 265.90. It normally uses CAS 7722-88-5.

It is commonly selected for:

• Dry detergent formulations

• Industrial cleaners

• Food processing

• Ceramic production

• Water treatment

• Powder blends

• Applications requiring higher active content per kilogram

TSPP Decahydrate

TSPP decahydrate has the formula Na4P2O7·10H2O and molecular weight 446.06. It normally uses CAS 13472-36-1.

It may be selected for laboratory, formulation and food-development applications where crystalline hydrated material is required.

Because the decahydrate contains crystal water, one kilogram does not provide the same quantity of Na4P2O7 as one kilogram of anhydrous TSPP.

Always compare quotations using the same chemical form and equivalent active content.

Food Grade vs. Industrial Grade TSPP

Food-Grade TSPP

Food-grade TSPP must comply with the specifications and permitted uses applicable in the destination market.

Japan’s official food-additive standard recognizes both crystalline decahydrate and anhydrous tetrasodium pyrophosphate. It requires at least 97% Na4P2O7 on a dried basis and specifies a pH range of 9.9–10.7 for a 1% solution.

Official reference: Japanese Ministry of Health, Labour and Welfare TSPP specification

A supplier’s use of the words “food grade” does not by itself demonstrate compliance with Japanese requirements. Buyers should compare the current specification and batch COA with the relevant Japanese standard.

Industrial-Grade TSPP

Industrial-grade TSPP is commonly used in:

• Detergents

• Industrial cleaning products

• Water softening

• Boiler-water treatment

• Metal cleaning

• Textile processing

• Ceramic dispersion

• Paint and pigment production

• Peroxide stabilization

• General chemical manufacturing

Industrial buyers should prioritize active content, P2O5, pH, insoluble matter, orthophosphate, moisture, particle size and bulk density.

Reagent-Grade TSPP

Reagent-grade products are supplied in smaller packages with laboratory documentation. They are normally more expensive per kilogram and should not be assumed to have food-additive approval.

Major TSPP Applications in Japan

Food Processing

TSPP can function as an emulsifier, buffer, sequestrant and formulation aid in permitted food applications.

It is used in selected meat, seafood, dairy and noodle-processing systems. The permitted use and dosage must be confirmed under current Japanese regulations and the buyer’s product formulation.

Detergents and Industrial Cleaners

TSPP binds calcium and magnesium ions, supports water softening and helps disperse soils. It can be used as a builder in cleaning formulations where phosphate use is technically and legally appropriate.

Water Treatment

TSPP can act as a sequestrant and dispersant in industrial water systems. Buyers should evaluate the specific water chemistry, treatment objective and local discharge requirements.

Ceramics

In ceramic production, TSPP is used as a dispersing or deflocculating agent. It can help control slurry viscosity and improve the distribution of solid particles.

Metal Treatment

TSPP may be used in metal-cleaning, surface-treatment and electroplating-related formulations as a builder, buffer or sequestrant.

Personal Care and Oral Care

TSPP is used in selected toothpaste and personal-care formulations. Cosmetic and quasi-drug manufacturers must verify the applicable Japanese ingredient and finished-product requirements.

Specifications to Compare Before Buying TSPP

Documents Japanese Buyers Should Request

Before approving a supplier, request:

• Current product specification

• Representative COA

• Batch-specific COA before shipment

• Japanese or English SDS

• Manufacturing-site information

• Country of origin

• Food-additive declaration where applicable

• Allergen statement for food applications

• GMO statement where required

• Heavy-metal and arsenic results

• Packaging specification

• Shelf life or retest period

• Storage recommendations

• Product sample

• Commercial invoice format

• Packing-list format

• Certificate of origin where required

• Relevant quality-system certificates

For food applications, confirm that every document applies to the exact manufacturing site and grade being purchased.

Importing TSPP into Japan

Tetrasodium pyrophosphate is generally classified within the polyphosphate section of the customs tariff.

Japan Customs lists tariff code 2835.39 for other polyphosphates in its 2026 schedule. The applicable duty depends on product classification, country of origin and trade-agreement treatment.

Official reference: Japan Customs 2026 tariff schedule

Importers should confirm the classification and applicable rate with a Japanese customs broker before shipment.

Food-grade TSPP must satisfy applicable Japanese food-additive specifications and import procedures. The Japanese Ministry of Health, Labour and Welfare explains that food additives are permitted only after safety evaluation and the establishment of specifications or use standards.

Official reference: MHLW food-additive information

This section is provided for general sourcing information and is not legal or regulatory advice.

How to Compare TSPP Prices

The lowest unit price does not always provide the lowest delivered cost.

Compare:

• Anhydrous versus decahydrate form

• Food, industrial or reagent grade

• Active Na4P2O7 content

• Package size

• Minimum order quantity

• Freight cost

• Import duty

• Customs-clearance charges

• Inspection and testing costs

• Japanese labeling or repacking

• Delivery time

• Payment terms

• Currency risk

• Supplier qualification costs

• Cost of inconsistent batches

When comparing anhydrous and decahydrate products, calculate the cost according to equivalent active Na4P2O7 rather than total product weight.

TSPP Supplier-Verification Checklist

1. Confirm that the product is TSPP rather than SAPP or STPP.

2. Verify the CAS number.

3. Confirm whether it is anhydrous or decahydrate.

4. Match the specification to the intended application.

5. Request a representative COA.

6. Test a sample in the actual formulation.

7. Verify the manufacturing site.

8. Confirm whether the seller is a manufacturer or distributor.

9. Review Japanese import requirements.

10. Agree on a written specification.

11. Define packaging and labeling requirements.

12. Confirm the production and delivery schedule.

13. Request a batch-specific COA.

14. Inspect the first commercial shipment.

15. Monitor batch consistency during repeat purchases.

Recommended TSPP RFQ Template

Subject: Request for Quotation – Tetrasodium Pyrophosphate for Japan

Dear Sales Team,

We are evaluating suppliers of tetrasodium pyrophosphate for the Japanese market.

Please quote according to the following requirements:

Product: Tetrasodium Pyrophosphate
Abbreviation: TSPP
CAS number: [7722-88-5 / 13472-36-1]
Chemical form: [Anhydrous / Decahydrate]
Grade: [Food / Industrial / Reagent]
Required assay: [Insert requirement]
Application: [Insert application]
Order quantity: [Insert quantity]
Annual demand: [Insert annual volume]
Packaging: [Insert packaging]
Destination: [City or port, Japan]
Incoterm: [FOB / CFR / CIF / DDP]
Required delivery date: [Insert date]

Please provide:

1. Current product specification

2. Representative COA

3. SDS

4. Manufacturing-site address

5. Country of origin

6. Packaging details

7. Shelf life

8. Lead time

9. Available sample quantity

10. Food-grade or quality-system certificates, where applicable

Best regards,

[Name]
[Company]
[Telephone]
[Email]

Frequently Asked Questions

What is TSPP?

TSPP is tetrasodium pyrophosphate, an inorganic sodium phosphate with the formula Na4P2O7. It functions as a buffer, dispersant, emulsifier and sequestrant.

Is sodium pyrophosphate the same as TSPP?

“Sodium pyrophosphate” commonly refers to tetrasodium pyrophosphate. Buyers should still verify the chemical formula and CAS number because several pyrophosphate compounds have similar names.

What is the CAS number of TSPP?

Anhydrous TSPP normally uses CAS 7722-88-5. TSPP decahydrate normally uses CAS 13472-36-1.

What is TSPP called in Japanese?

The Japanese name is ピロリン酸四ナトリウム. The anhydrous product may be written as ピロリン酸四ナトリウム（無水）.

Who manufactures TSPP in Japan?

Taihei Chemical Industrial, Rin Kagaku Kogyo and Nippon Chemical Industrial publish identifiable commercial sodium pyrophosphate products.

Is AoZun a Japanese TSPP manufacturer?

No. AoZun Chemical is based in Changzhou, China. It is included as an export-oriented producer and supplier serving buyers importing TSPP into Japan.

What is the difference between TSPP and STPP?

TSPP is tetrasodium pyrophosphate with formula Na4P2O7. STPP is sodium tripolyphosphate with formula Na5P3O10. They have different structures and should not be treated as interchangeable without formulation testing.

What is the difference between TSPP and SAPP?

TSPP is alkaline tetrasodium pyrophosphate. SAPP is sodium acid pyrophosphate, with formula Na2H2P2O7. SAPP is commonly used as an acidic leavening agent, while TSPP is normally used as an alkaline buffer, builder or sequestrant.

Is food-grade TSPP permitted in Japan?

Tetrasodium pyrophosphate is included in Japan’s food-additive framework, but the supplied grade and intended use must comply with current Japanese specifications and use standards.

What package sizes are available?

Japanese industrial manufacturers commonly offer 25 kg paper bags. Laboratory suppliers provide smaller packages such as 25 g or 500 g.

How should TSPP be stored?

Store TSPP in a dry area in tightly closed packaging. Anhydrous TSPP can absorb moisture, while the decahydrate can lose crystal water under dry conditions. Always follow the current supplier SDS.

Which supplier is best for bulk imports?

The best choice depends on grade, volume, required documents, delivery time and landed cost. AoZun is suitable for export-oriented commercial inquiries, while Taihei, Rin Kagaku and Nippon Chemical Industrial are strong domestic Japanese options.

Final Recommendation

Japanese buyers have three main TSPP procurement routes.

For domestic industrial production, evaluate Taihei Chemical Industrial, Rin Kagaku Kogyo and Nippon Chemical Industrial.

For local formulation, repacking or multinational phosphate supply, consider ICL Japan and Union.

For laboratory quantities, Kanto Chemical, TCI, Junsei Chemical and Hayashi Pure Chemical provide traceable catalog options.

For importers, distributors and industrial buyers seeking an export-oriented supplier, AoZun Chemical can provide a quotation based on the required TSPP form, grade, packaging, volume and destination in Japan.

When contacting AoZun, include:

• Anhydrous or decahydrate requirement

• Food or industrial grade

• Required assay and P2O5 content

• Target application

• Package size

• Trial quantity

• Annual demand

• Destination in Japan

Request the specification, COA, SDS and sample before confirming the first commercial order.

Editorial note: Product specifications, availability, packaging and regulations can change. Verify all information directly with the supplier and relevant Japanese authorities before purchasing.

Last reviewed: September 2026.