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Heading (4-digit)

3815Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included:

反応開始剤、反応促進剤及び調製触媒（他の項に該当するものを除く。）

HS code 3815 is a Heading (4-digit) classification number. In Japan's trade statistics (published by Ministry of Finance), it represents import/export items classified as “Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included:”. This code has 4 subcategories defined below it.

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Latest trade statistics

In May 2026, Japan's imports under HS code 3815 (Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included:) totaled ¥16B (YoY +136.0%), with a volume of 2,170,657 KG at about ¥7,487/KG. The top import sources are Thailand (32.2%), United States of America (24.6%), People's Republic of China (9.4%). Exports totaled ¥23B (YoY +85.0%), with a volume of 3,152,909 KG at about ¥7,396/KG. The top export destinations are Republic of Korea (21.8%), People's Republic of China (12.2%), United States of America (9.2%).

Export (May 2026)
¥23B
YoY: +85.0%
Qty: 3,152,909 KG
Unit price: ¥7,396/KG
Import (May 2026)
¥16B
YoY: +136.0%
Qty: 2,170,657 KG
Unit price: ¥7,487/KG

Top export destinations (2025)

#CountryValueShareQtyUnit price
1Republic of Korea¥46B21.8%18,284,751 KG¥2,530/KG
2People's Republic of China¥26B12.2%2,841,511 KG¥9,112/KG
3United States of America¥19B9.2%2,471,259 KG¥7,861/KG
4Czech Republic¥19B8.9%42,757 KG¥438,904/KG
5Thailand¥18B8.5%2,218,454 KG¥8,099/KG

Top import sources (2025)

#CountryValueShareQtyUnit price
1Thailand¥34B32.2%915,723 KG¥36,626/KG
2United States of America¥26B24.6%10,866,259 KG¥2,357/KG
3People's Republic of China¥10B9.4%3,080,662 KG¥3,173/KG
4Malaysia¥9B8.3%557,256 KG¥15,578/KG
5Indonesia¥6B6.2%177,717 KG¥36,569/KG

Subcategories4items

Subheading (6-digit)
381511With nickel or nickel compounds as the active substance
Subheading (6-digit)
381512With precious metal or precious metal compounds as the active substance:
Subheading (6-digit)
381519Other:
Subheading (6-digit)
381590Other:

Related codes

Other codes in the same classification group

3801Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semi-manufactures:3802Activated carbon; activated natural mineral products; animal black, including spent animal black:3805Gum, wood or sulphate turpentine and other terpenic oils produced by the distillation or other treatment of coniferous woods; crude dipentene; sulphite turpentine and other crude para-cymene; pine oil containing alpha-terpineol as the main constituent:3806Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums:3808Insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles (for example, sulphur-treated bands, wicks and candles, and fly-papers):3809Finishing agents, dye carriers to accelerate the dyeing or fixing of dyestuffs and other products and preparations (for example, dressings and mordants), of a kind used in the textile, paper, leather or like industries, not elsewhere specified or included:3810Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods:3811Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils:3812Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; anti-oxidising preparations and other compound stabilisers for rubber or plastics:3822Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 30.06; certified reference materials:3823Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols:3824Prepared binders for foundry moulds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included:3825Residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter:3827Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included:

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