Top > International Mail > How to Use > Nonmailable Articles

International Mail

Nonmailable Articles in International Mail

Articles Prohibited to be Mailed by Postal Law

Please note that laws/provisions prohibit certain articles sent by international mail.

Also, the destination country may also restrict certain articles to be sent.

International Mail Conditions.

Articles Prohibited to be Mailed by Postal Law

Articles Prohibited to be Mailed by Postal Law
Explosive substances

Ignition agents

Ignition agents, flash agents, smoking agents, smoking agents and thermit


  • Nitrate and other gun powders (black powders and ammon powders for hunting or mines)
  • Nitrocellulose and other smokeless powders (smokeless powders for hunting)
  • Compounds of nitrocellulose and nitroglycerin and other smokeless powders

Explosives・Fulminate (e.g. mercury fulminate), nitrogen/hydrogen bromide (e.g. lead nitride), and other initiating explosives

  • Nitrate, chlorate, perchlorate, and other explosives (e.g. ammonium nitrate explosives, potassium chlorate explosives, and carlit)
  • Nitric ester (e.g. nitrocotton, nitric starch, Pentaerythritol tetranitrate) and other mixtures
  • Nitroglycerin, nitroglycol, and other explosives (e.g. dynamites)
  • Nitro compounds (e.g. trinitrobenzol, tetryl, trinitrotoluol, picric acid, trinitroanisole, hexanitrodiphenylamine, trimethylene trinitroamine, and trinitrobenzol chloride) and other mixtures


Cartridges, blanks, power bags, powder tubes, blasting caps, rimfire, fuses, smoke tubes, explosion tubes, gate tubes, safety fuses, detonating fuses, fireworks, toy fireworks, and other pyrotechnics based on powders or explosives


Metaacrylic methyl ester, chlorite, (e.g. Noesilox), and other products

Ignitable materials Ignitable alloys, reduced iron, reduced nickel, potassium permanganate, yellow phosphorous, red phosphorus, phosphorus sulfide, match, metallic potassium, metallic sodium, magnesium powders, aluminum powders, brass powders, zinc powders, copper powders, calcium oxide, peroxide (lead dioxide, sodium peroxide, barium peroxide, potassium peroxide, etc), carbide, calcium phosphide and hydrosulfite.
Flammable materials

Materials with flash points not higher than 30 degrees centigrade.

Following materials except for the above. Paint, cements and other materials (lacquer, rubber cements and asphalt primer) including kerosene family materials (ligroin, gasoline, petroleum benzine, natural gas separation oil, shale oil, coal liquefaction oils and tar distillation oils with their flashpoints equal to or lower than 30 degrees centigrade) as a major material.

  • Alcohols (including methanol, butanol and denatured alcohols) and cosmetics, liquors,and other products that contain 60% or more of alcohol
  • Collodion, solvent naphtha (coal tar naphtha), turpentine oil, camphor, pine oil, and creosote oil
Flammable gases Butane, propane, acetylene, PVC monomers, and other flammable gases
Strong oxigenated materials Oxygenated water (with 20% or more oxygen content )
Materials that emit toxic/malodorous gas or steam Poison gases (e.g. yperite, lewisite, and adamsite), dimethyl sulfate (methyl sulfate), anhydrous aluminium chloride, chlorobenzol, chlorobenzyl, chloroacetyl, chloropicrin, bromine, brombenzyl, phosphorus pentachloride, sulfur chloride, stannic chloride, sulfuric chloride, acraldehyde, titanium tetrachloride and silicon tetrachloride
Toxic materials
  • Octamethyl pyrophosphoramide and formulations that contain it (e.g. schradan OMPA and Bestox III)
  • Tetraaralkyl lead (e.g. tetraethyl lead and tetramethyl lead) and formulations that contain it.
  • Diethyl paranitrophenyl thiophosphate and formulations that contain it (e.g. parathion and parathion fomulations)
  • Dimethyl ethyl mercapto-ethylphosphate and formulations that contains it (e.g. methyldemeton and metasystox)
  • Dimethyl-(diethylamine-1-chlorocrotonyl)-phosphate and formulations that contain it (e.g. phosphamidon)
  • Diethyl paranitrophenyl thiophosphate and formulations that contain it (e.g. methyl parathion)
  • Tetraethyl pyrophosphate and fomulations that contain it (e.g. TEPP, and Nikkarin P)
  • Monofluor acetic acid and monoflour acetates and formulations that contain any of them (e.g. monoflour acetic sodium and flanotall)
  • Monofluor-acetic acid and formulations that contains it (e.g. Fussol)
  • Formulations that contain aluminum phosphide and decomposition trigger for it (e.g. phostoxin)
Strong acids Fuming sulfuric acid, anhydrous sulfuric acid, sulfuric acid, fuming nitric acid, nitric acid, anhydrous phosphoric acid (phosphorus pentaoxide), chlorosulfonic acid, flouridic hydroacid, hydrochloric acid, and formic acid
Radioactive substances Radioactive and other materials defined in Section 1-(1)ho under Article 2 (Notice # 585 issued by the Ministry of Transport in 1977 to define detailed requirements for sea transport of radioactive and other materials) of the regulations on sea transport)
Poisonous/powerful drugs Poisonous and powerful drugs, poisons, and powerful materials (excluding ones presented by governmental organizations, medical doctors, dentists, veterinarians, pharmacists, or poisonous/powerful material handling organizations)
Pathogens Living pathogens and materials that are proved to contain a living pathogen or carry one on the surface (excluding ones that are presented by governmental organizations, bacteria inspection organizations, medical doctors or veterinarians)
Others Materials that are forbidden to be transferred or distributed by law and regulations

Check rates and delivery days

Calculate by destination, type of articles and weight

Japan Post Co., Ltd.

Copyright (c) JAPAN POST Co.,Ltd. All rights reserved.