On September 1, 2026, Japan's Consumer Affairs Agency opened a public consultation on proposed amendments to the Ordinance for Enforcement of the Food Sanitation Act and to the Specifications and Standards for Foods, Food Additives, Etc.
The proposals include the new designation of potassium acetate as a food additive and the establishment of associated specifications and standards. The consultation closes on October 1, 2026. As of September 9, 2026, these remain proposals; businesses must check the final promulgated provisions and effective dates. e-Gov consultation record
For companies developing health foods or conventional foods, the implications extend beyond this single additive. When sourcing overseas ingredients, designing OEM formulations or importing finished products, permission to use a substance in food overseas and permission to use it in Japan must be checked separately.
What is potassium acetate?
The Food Safety Commission of Japan's assessment record lists intended uses as a pH regulator, acidulant, seasoning agent and shelf-life improvement agent.
The Commission received the Consumer Affairs Agency's assessment request on May 13, 2026, and notified its assessment result on May 21. The Food Additives Subcommittee of the Food Sanitation Standards Council considered the proposed designation on June 2. Food additive designations were also on the Council's August 26 agenda. The related regulatory proposals are now undergoing public consultation. Food Safety Commission assessment record
Overseas permission does not establish permission in Japan
Under Japan's Food Sanitation Act, food additives generally must be designated by the Prime Minister. Exceptions include existing food additives, natural flavoring agents, and substances ordinarily consumed as food that are used as additives. The Consumer Affairs Agency sets compositional specifications and use standards where needed, taking account of the Food Safety Commission's safety assessments and other relevant information. Consumer Affairs Agency: Food additives
Statements such as "used in the EU," "food grade in the United States" or "commonly used in overseas supplements" therefore do not, by themselves, establish that an ingredient can be adopted for a product sold in Japan. Before commercialization, confirm its classification and applicable conditions under the Japanese system.
Japanese additive standards also apply to imports
This distinction is particularly relevant to importers of finished foods. The Consumer Affairs Agency explains that Japan's food additive requirements apply to foods distributed in Japan, whether domestically produced or imported. Consumer Affairs Agency: Food additive information
Even when importing an overseas manufacturer's existing product without changes, check:
- Main ingredients
- Secondary ingredients
- Excipients
- Coating ingredients
- Flavorings
- Sweeteners
- Preservatives
- pH regulators
- Additives contained in premixes
Assessing import feasibility only from a product name or principal ingredients can leave additive issues undiscovered until reformulation or remanufacturing becomes necessary.
Check OEM formulations before they are finalized
The same principle applies to OEM manufacturing in Japan. Product planning often starts with the quantity of a functional ingredient, but commercial formulations also contain secondary ingredients and additives needed for processing.
For overseas ingredients and premixes, check carriers and additives used during manufacturing, alongside the stated ingredient name.
At the planning stage, we recommend reviewing the following as a connected sequence:
Ingredients → Formulation → Dosage form → Manufacturing conditions → Labeling → Sales market
Checking Japanese use conditions during ingredient selection can reduce rework after prototypes or packaging have been produced.
Five points for businesses to check
1. Distinguish proposals from provisions already in force
As of September 9, 2026, the potassium acetate proposals are still under consultation. Do not treat an expected designation as current permission. Check the final provisions and effective date before incorporating the change into product specifications.
2. Check the complete composition, not just the ingredient name
Compound ingredients and premixes may contain dextrin, emulsifiers, flavorings or pH regulators in addition to their main component. If an ingredient specification does not provide enough information, request the full composition and manufacturing details from the supplier.
3. Do not equate "food grade" with permission under Japanese law
The expression may refer to a particular jurisdiction's requirements or a supplier's specification. For products intended for Japan, independently check the substance's status as a designated additive, existing additive or other applicable category, together with use standards.
4. Check compositional specifications and use standards together
Permission to use a substance may come with conditions concerning purity, food categories or quantities. Adoption decisions should therefore check current specifications and standards, rather than the name alone.
5. Share information across the supply chain
An ingredient supplier → OEM manufacturer → brand owner → importer or distributor may all participate in one product. Agree in advance who reviews ingredient or additive changes and which parties receive the updated information. This can help prevent specification differences after commercial production begins.
A review sequence for overseas ingredients entering Japan
STEP 1 | Obtain the complete composition
Check secondary ingredients, additives, carriers and processing aids as well as the main components.
STEP 2 | Establish the Japanese classification
Determine whether the substance is treated as an ordinary food ingredient or a food additive.
STEP 3 | Check the legal basis for additive use
Confirm whether it falls within designated additives, existing additives, natural flavoring agents or substances ordinarily consumed as food and used as additives.
STEP 4 | Review specifications and use standards
Reflect applicable purity, food category and quantity conditions in the formulation and specifications.
STEP 5 | Finalize OEM and labeling specifications
After the regulatory review, finalize the formulation, ingredient declaration and packaging specifications.
Following this sequence can reduce the risk of replacing an ingredient after prototyping or immediately before import.
FAQ
Can potassium acetate currently be used in foods in Japan?
As of September 9, 2026, the proposed designation and associated specifications and standards are under public consultation. Check its treatment under the current system and the final provisions when promulgated. The proposal itself is not permission to use the additive.
Can an additive approved overseas also be used in Japan?
Not necessarily. Japan generally requires designation, with exceptions for existing additives, natural flavoring agents and substances ordinarily consumed as food that are used as additives. Check the applicable category and conditions.
Is an overseas OEM manufacturer's "for food use" statement sufficient?
"For food use" or "food grade" alone does not establish permission in Japan. Check the substance name, composition, specifications, intended use and Japanese regulatory status.
Must finished-product importers also check?
Yes. Japanese food additive specifications and standards also apply to imported foods distributed in Japan.
Conclusion
Food development requires attention to additives and manufacturing conditions as well as the functions of new ingredients. The potassium acetate proposal is one example of continuing changes to Japan's food additive system.
Businesses handling overseas ingredients, overseas OEM production or imported foods should establish the Japanese regulatory basis for use before proceeding with commercialization.
JSH treats health food planning, ingredient review, OEM manufacturing, quality documentation, labeling and import/export arrangements as a connected practical process, helping clarify the checks needed before commercialization.
This article provides general practical information for food businesses based on public information available on September 9, 2026. For individual products, check the latest laws, notifications, administrative materials and product-specific conditions before determining legality or permitted use.
References
- e-Gov: Consultation on additive designation and standards, case 235110034
- Consumer Affairs Agency: Food additives
- Consumer Affairs Agency: Food Additives Subcommittee, June 2, 2026
- Consumer Affairs Agency: Food Sanitation Standards Council, August 26, 2026
- Food Safety Commission of Japan: Potassium acetate assessment record