Environmental Health & Safety

GHS Hazardous Codes and Statements

Code Physical hazard statement Hazard Class Hazard Category
H200 Unstable explosive Explosives (chapter 2.1) Unstable explosive
H201 Explosive; mass explosive hazard Explosives (chapter 2.1) Division 1.1
H202 Explosive; severe projection hazard Explosives (chapter 2.1) Division 1.2
H203 Explosive; fire, blast or projection hazard Explosives (chapter 2.1) Division 1.3
H204 Fire or projection hazard Explosives (chapter 2.1) Division 1.4
H205 May mass explode in fire Explosives (chapter 2.1) Division 1.5
H220 Extremely flammable gas Flammable gases (chapter 2.2) 1
H221 Flammable gas Flammable gases (chapter 2.2) 2
H222 Extremely flammable aerosol Flammable aerosols (chapter 2.3) 1
H223 Flammable aerosol Flammable aerosols (chapter 2.3) 2
H224 Extremely flammable liquid and vapour Flammable liquids (chapter 2.6) 1
H225 Highly flammable liquid and vapour Flammable liquids (chapter 2.6) 2
H226 Flammable liquid and vapour Flammable liquids (chapter 2.6) 3
H227 Combustible liquid Flammable liquids (chapter 2.6) 4
H228 Flammable solid Flammable solids (chapter 2.7) 1, 2
H240 Heating may cause an explosion Self-reactive substances and mixtures (chapter 2.8); and Organic peroxides (chapter 2.15) Type A
H241 Heating may cause a fire or explosion Self-reactive substances and mixtures (chapter 2.8); and Organic peroxides (chapter 2.15) Type B
H242 Heating may cause a fire Self-reactive substances and mixtures (chapter 2.8); and Organic peroxides (chapter 2.15) Types C, D, E, F
H250 Catches fire spontaneously if exposed to air Pyrophoric liquids (chapter 2.9); Pyrophoric solids (chapter 2.10) 1
H251 Self-heating; may catch fire Self-heating; substances and mixtures (chapter 2.11) 1
H252 Self-heating; in large quantities; may catch fire Self-heating; substances and mixtures (chapter 2.11) 2
H260 In contact with water releases flammable gases which may ignite spontaneously Substances and mixtures which, in contact with water, emit flammable gases (chapter 2.12) 1
H261 In contact with water releases flammable gas Substances and mixtures which, in contact with water, emit flammable gases (chapter 2.12) 2, 3
H270 May cause or intensify fire; oxidizer Oxidizing gases (chapter 2.4) 1
H271 May cause fire or explosion; strong oxidizer Oxidizing liquids (chapter 2.13); Oxidizing solids (chapter 2.14) 1
H272 May intensify fire; oxidizer Oxidizing liquids (chapter 2.13); Oxidizing solids (chapter 2.14) 2, 3
H280 Contains gas under pressure; may explode if heated Gases under pressure (chapter 2.5) Compressed gas
Liquefied gas
Dissolved gas
H281 Contains refrigerated gas; may cause cryogenic burns or injury Gases under pressure (chapter 2.5) Refrigerated liquefied gas
H290 May be corrosive to metals Corrosive to metals (chapter 2.16) 1
Code Health hazard statement Hazard Class Hazard Category
H300 Fatal if swallowed Acute toxicity, oral (chapter 3.1) 1, 2
H301 Toxic if swallowed Acute toxicity, oral (chapter 3.1) 3
H302 Harmful if swallowed Acute toxicity, oral (chapter 3.1) 4
H303 May be harmful if swallowed Acute toxicity, oral (chapter 3.1) 5
H304 May be fatal if swallowed and enters airways Aspiration hazard (chapter 3.10) 1
H305 May be harmful if swallowed and enters airways Aspiration hazard (chapter 3.10) 2
H310 Fatal in contact with skin Acute toxicity, dermal (chapter 3.1) 1, 2
H311 Toxic in contact with skin Acute toxicity, dermal (chapter 3.1) 3
H312 Harmful in contact with skin Acute toxicity, dermal (chapter 3.1) 4
H313 May be harmful in contact with skin Acute toxicity, dermal (chapter 3.1) 5
H314 Causes severe skin burns and eye damage Skin corrosion/irritation (chapter 3.2) 1A, 1B, 1C
H315 Causes skin irritation Skin corrosion/irritation (chapter 3.2) 2
H316 Causes mild skin irritation Skin corrosion/irritation (chapter 3.2) 3
H317 May cause an allergic skin reaction Sensitization, skin (chapter 3.4) 1
H318 Causes serious eye damage Serious eye damage/eye irritation (chapter 3.3) 1
H319 Causes serious eye irritation Serious eye damage/eye irritation (chapter 3.3) 2A
H320 Causes eye irritation Serious eye damage/eye irritation (chapter 3.3) 2B
H330 Fatal if inhaled Acute toxicity, inhalation (chapter 3.1) 1, 2
H331 Toxic if inhaled Acute toxicity, inhalation (chapter 3.1) 3
H332 Harmful if inhaled Acute toxicity, inhalation (chapter 3.1) 4
H333 May be harmful if inhaled Acute toxicity, inhalation (chapter 3.1) 5
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitization, respiratory (chapter 3.4) 1
H335 May cause respiratory irritation Specific target organ toxicity, single exposure; Respiratory tract irritation (chapter 3.8) 3
H336 May cause drowsiness or dizziness Specific target organ toxicity, single exposure; Narcotic effects (chapter 3.8) 3
H340 May cause genetic defects (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Germ cell mutagenicity (chapter 3.5) 1A, 1B
H341 Suspected of causing genetic defects (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Germ cell mutagenicity (chapter 3.5) 2
H350 May cause cancer (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Carcinogenicity (chapter 3.6) 1A, 1B
H351 Suspected of causing cancer (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Carcinogenicity (chapter 3.6) 2
H360 May damage fertility or the unborn child (state specific effect if known)(state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Reproductive toxicity (chapter 3.7) 1A, 1B
H361 Suspected of damaging fertility or the unborn child (state specific effect if known)(state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Reproductive toxicity (chapter 3.7) 2
H362 May cause harm to breast-fed children Reproductive toxicity, effects on or via lactation (chapter 3.7) Additional category
H370 Causes damage to organs (or state all organs affected, if known) (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Specific target organ toxicity, single exposure (chapter 3.8) 1
H371 May cause damage to organs (or state all organs affected, if known)(state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Specific target organ toxicity, single exposure (chapter 3.8) 2
H372 Causes damage to organs (state all organs affected, if known) through prolonged or repeated exposure (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Specific target organ toxicity, repeated exposure (chapter 3.9) 1
H373 May cause damage to organs (state all organs affected, if known) through prolonged or repeated exposure (state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard) Specific target organ toxicity, repeated exposure (chapter 3.9) 2
Code Environmental hazard statement Hazard Class Hazard Category
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute toxicity (chapter 4.1) 1
H401 Toxic to aquatic life Hazardous to the aquatic environment, acute toxicity (chapter 4.1) 2
H402 Harmful to aquatic life Hazardous to the aquatic environment, acute toxicity (chapter 4.1) 3
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, chronic toxicity (chapter 4.1) 1
H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, chronic toxicity (chapter 4.1) 2
H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, chronic toxicity (chapter 4.1) 3
H413 May cause long lasting harmful effects to aquatic life Hazardous to the aquatic environment, chronic toxicity (chapter 4.1) 4
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