Japan Salt Industry Association

What Japan Salt Industry Association does

The Japan Salt Industry Association (一般社団法人 日本塩工業会) is the coordinating body for Japan's domestic salt manufacturing sector, comprising four member companies—Diamond Salt, Naikai Salt, Naruto Salt, and Nihon Kaisui—which together produce approximately 99.9% of Japan's domestically produced salt. The association's member firms operate five production sites distributed across Hyogo, Tokushima, Okayama, and Chiba, supplying food processors, industrial users, and household-retail channels throughout Japan. Production technology across the membership is built around ion-exchange membrane electrodialysis combined with vacuum evaporation crystallization, a process stack refined over more than five decades since the predecessor body's founding in 1972.

The association itself was re-established as a new general incorporated association in April 2024, formalizing coordination on three strategic priorities: stable domestic supply under Japan's Salt Business Law and food-security policy, BCP emergency supply continuity via a June 2023 mutual-cooperation agreement, and a 2050 carbon-neutrality commitment operationalized through a dedicated Carbon Neutrality Promotion Committee. A parallel Domestic Salt Committee focuses on market-development and regulatory positioning. The association is headquartered in Roppongi, Tokyo, and operates with a small staff (1-10 employees), funded through member dues rather than commercial revenue; its principal outputs are policy advocacy, industry coordination, BCP planning, consumer education (including a renewed website launched in November 2024), and stewardship of by-product channels such as bittern, magnesium chloride, and potassium chloride.

Name

Japan Salt Industry Association

Legal name

一般社团法人 日本盐协会

Website

https://sio.or.jp

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

The Japan Salt Industry Association is a Tokyo-based general incorporated association coordinating Japan's four domestic salt producers, which together supply approximately 99.9% of domestically produced salt to food processors, industrial users, and retail channels across Japan.

Ownership category

akta.pro rank

Product category

Salt Manufacturing

SIC

Industrial Inorganic Chemicals (2810)

akta.pro primary industry

Industrial Salt Mining (Rock Salt, Brine) (IMAKAGAG)

akta.pro secondary industry

Salt & Salt-Based Seasonings (Sea Salt, Flake, Seasoned Salts) (AFAJANAE)

Keywords

• Domestic salt production
• Ion exchange membrane salt
• Seawater salt manufacturing
• Edible salt supply
• Industrial salt minerals

Headquarters

HQ city

Roppongi

HQ country

Japan

HQ region

Asia

Offices9 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Domestic Salt Production and Sales: Four member companies produce salt using ion exchange membrane electrodialysis and vacuum evaporation. Products include dried salt (乾燥塩) and undried/wet salt (未乾燥塩/湿塩) sold under various brand names. Member companies generate revenue through B2B sales to food processors, industrial users, and retail distribution.
2. Bittern (にがり) and Mineral By-products: Co-production of magnesium chloride for tofu coagulation, magnesium supplements, potassium chloride for sports drinks and fertilizers, and industrial mineral products derived from seawater processing.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

The Japan Salt Industry Association is an industry body coordinating four domestic salt manufacturers (Diamond Salt, Naikai Salt, Naruto Salt, and Nihon Kaisui) that collectively produce approximately 99.9% of Japan's domestically consumed salt. The association oversees production of dried salt and undried/wet salt from seawater using ion exchange membrane electrodialysis combined with vacuum evaporation, and coordinates sale of by-products including bittern (magnesium chloride), seawater-derived magnesium, and potassium chloride.

Product overview

Japan Salt Industry Association is an industry association comprising four ion exchange membrane salt production companies (Diamond Salt, Naikai Salt, Naru Salt, and Nihon Kaisui) that produce approximately 99.9% of Japan's domestic salt supply. The association offers two main salt product categories: dried salt (乾燥塩) and undried/wet salt (未乾燥塩/湿塩), along with byproducts including bittern (にがり) used as a tofu coagulant, seawater-derived magnesium minerals, and potassium chloride. The association also provides educational content including WEB picture books about salt and salt recipes to promote awareness of domestic salt's value and health benefits.

Differentiator

Problem solved

Functional benefit

Products and services

• Dried Salt (乾燥塩) Dry salt produced through ion exchange membrane electrodialysis and vacuum evaporation, one of the two main salt product categories manufactured by the four member companies for food processing, industrial, and retail use.
• Undried Salt/Wet Salt (未乾燥塩/湿塩) Salt shipped in moist condition directly after centrifugal separation without drying, one of the two main salt product categories produced by member companies.
• Bittern / Mother Liquor (苦汁/にがり) Coagulant for tofu production derived from seawater after salt extraction; crude seawater magnesium chloride used in premium tofu that preserves soybean flavor.
• Seawater-derived Magnesium Mineral (海水由来ミネラル マグネシウム) Magnesium obtained through crystallization from bittern after salt separation, used as surface treatment agents, ceramic raw materials, and dietary supplements.
• Potassium Chloride (塩化カリウム) Seawater-derived potassium chloride used in sports drinks, food additives, and as one of the three major fertilizers.

Quantifiable outcome

• Excludes 100% of marine pollutants including mercury, PCBs, marine plastics, and bacteria through 0.000001mm membrane filtration
• +1 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered minor and core.

• 一般社团法人食用塩公正取引協議会 (Fair Trade Council for Edible Salt)minorOthers · 4 March 2026Related organization ensuring fair trade practices in the edible salt industry. Linked as a related site from the association website.
• 全国塩業懇話会 (National Salt Industry Discussion Council)minorOthers · 4 March 2026Industry discussion council for salt business operators. Listed as a related organization on the association website.
• 塩と暮らしを結ぶ運動 (Salt and Daily Life Movement)minorOthers · 4 March 2026Public education campaign connecting salt with daily life. Listed as a related organization.
• 緊急時の相互協力に関する基本合意書 (Basic Agreement on Emergency Mutual Cooperation)coreStrategic or Co-development Partner · 1 June 2023In June 2023, salt industry organizations including the four domestic salt manufacturers, Salt Business Center (塩事業センター), Salt Wholesale Cooperative (塩元売協同組合), Salt Transport Association (塩輸送協会), and Japan Special Salt Manufacturing Association (日本特殊製法塩協会) signed a mutual cooperation agreement for stable salt supply during disasters. This BCP arrangement ensures emergency salt supply coordination across the entire salt industry supply chain.
• 塩事業センター (Salt Business Center)coreOthersEstablished in May 1996 following the Salt Business Law enactment. Originally managed salt imports and domestic distribution. Currently participates in BCP emergency supply cooperation agreements with domestic salt manufacturers.

Scale indicators4 records

Recent moves10 records

Expansion highlights4 records

Market position

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Japan Salt Industry Association