Hazard Statements (H-phrases, hazard statements, hazard statements) are unified warnings about the nature or degree of danger established within the Globally Harmonized System of Classification and Labelling of Chemicals (GHS).
Warnings are used as a set of standard phrases to briefly describe common hazards that arise when working with chemicals. In 2011, the list of warnings was republished in the fourth revised edition of the GHS.
Term | Definition |
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H420 | Damages human health and the environment by destroying the ozone layer in the upper atmosphere
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H413 | May cause long-term harmful effects on aquatic organisms
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H412 | Harmful to aquatic organisms with long-term effects
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H411 | Toxic to aquatic organisms with long-term effects
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H410 | Highly toxic to aquatic organisms with long-term effects
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H402 | Harmful to aquatic organisms
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H401 | Toxic to aquatic organisms
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H400 | Highly toxic to aquatic organisms
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H373 | May cause damage to organs (****) as a result of prolonged or repeated exposure (**)
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H372 | Causes damage to organs (****) as a result of prolonged or repeated exposure (**)
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H371 | May cause damage to organs (****) (**)
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H370 | Harms organs (****) (**)
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H362 | May cause harm to infants
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H361 | Suspected of damaging fertility or the fetus (***) (**)
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H360 | May cause damage to fertility or the fetus (***) (**)
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H351 | Suspected of causing cancer (**)
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H350 | May cause cancer (*)
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H341 | Suspected of causing genetic defects (*)
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H340 | May cause genetic defects (*)
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H336 | May cause drowsiness or dizziness
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H335 | May cause respiratory tract irritation
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H334 | May cause allergic or asthmatic symptoms or breathing difficulties if inhaled.
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H333 | May cause harm if inhaled
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H332 | Harmful if inhaled
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H331 | Toxic by inhalation
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H330 | Fatal if inhaled
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H320 | Causes eye irritation
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H319 | Causes serious eye irritation
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H318 | Causes serious eye damage
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H317 | May cause an allergic skin reaction
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H316 | Causes mild skin irritation
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H315 + H320 | Causes skin and eye irritation
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H315 | Causes skin irritation
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H314 | Causes severe skin burns and eye damage
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H313 + H333 | May be dangerous in contact with skin or if inhaled
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H313 | May be harmful in contact with skin
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H312 + H332 | Dangerous in contact with skin or if inhaled
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H312 | Harmful in contact with skin
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H311 + H331 | Toxic in contact with skin or by inhalation
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H311 | Toxic in contact with skin
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H310 + H330 | Fatal in contact with skin or by inhalation
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H310 | Fatal in contact with skin
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H305 | May be harmful if swallowed and inhaled
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H304 | May be fatal if swallowed and inhaled
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H303 + H333 | May be dangerous if swallowed or if inhaled
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H303 + H313 + H333 | May be dangerous if swallowed
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H303 + H313 | May be dangerous if swallowed or in contact with skin
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H303 | May cause harm if swallowed
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H302 + H332 | Dangerous if swallowed or if inhaled
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H302 + H312 + H332 | Dangerous if swallowed
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H302 + H312 | Dangerous if swallowed or in contact with skin
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H302 | Harmful if swallowed
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H301 + H331 | Toxic if swallowed or if inhaled
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H301 + H311 + H331 | Toxic if swallowed
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H301 + H311 | Toxic if swallowed or in contact with skin
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H301 | Toxic if swallowed
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H300 + H330 | Fatal if swallowed or if inhaled
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H300 + H310 + H330 | Fatal if swallowed
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H300 + H310 | Fatal if swallowed or in contact with skin
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H300 | Fatal if swallowed
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H290 | May cause corrosion of metals
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H281 | Contains cooled gas; may cause cryogenic burns or injury
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H280 | Contains gas under pressure; an explosion may occur when heated
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H272 | May increase gorenje; oxidizer
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H271 | May cause gorenje and explosion; strong oxidizer
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H270 | May cause or enhance gorenje; oxidizer
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H261 | In contact with water , flammable gas is released
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H260 | In contact with water , flammable gases are released
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H252 | Self-heating substances in large quantities; the probability of fire
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H251 | Self-heating substances; probability of ignition
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H250 | Spontaneous combustion in the open air
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H242 | When heated, a fire may occur
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H241 | When heated, an explosion or fire may occur
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H240 | An explosion may occur when heated
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H232 | May self-ignite upon contact with air
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H231 | Upon reacting, an explosion may occur even in the absence of air at elevated pressure and/or temperature
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H230 | When reacting, an explosion may occur even in the absence of air
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H229 | Pressurized cylinder: an explosion may occur when heated
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H228 | Flammable solid
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H227 | Flammable liquid
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H226 | Flammable liquid and vapor
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H225 | Flammable liquid and vapor
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H224 | Extremely flammable liquid and vapor
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H223 | Flammable aerosols
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H222 | Flammable aerosols
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H221 | Flammable gas
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H220 | Flammable gas
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H208 | Fire hazard; increased risk of explosion with reduced desensitizing agent
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H207 | Risk of fire or scattering; increased risk of explosion with reduced desensitizing agent
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H206 | |
H205 | Possibility of explosion by mass under the action of fire
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H204 | Risk of fire or spreading
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H203 | Explosive substance; fire hazard
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H202 | Explosive substance; significant risk of scattering
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H201 | Explosive substance; danger of explosion by mass
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H200 | Unstable explosive
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UH 401 | In order to avoid danger to human health and the environment, it is necessary to follow the operating instructions.
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UH 210 | A safety data sheet is available on request.
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UH 209A | May become flammable when used.
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UH 209 | May become very flammable when used.
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UH 208 | Contains (the name of the sensitizing substance). May cause allergic reactions.
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UH 207 | Attention! Contains cadmium! Dangerous vapours are formed during use. See information
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UH 206 | Warning! Do not use together with other products. It can emit dangerous gases (chlorine).
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UH 205 | Contains epoxy components. May cause an allergic reaction.
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UH 204 | Contains isocyanates. May cause an allergic reaction.
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UH 203 | contains chromium (VI). May cause an allergic reaction.
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UH 202 | Cyanoacrylate. Danger! Sticks to the skin and eyes in seconds. Keep out of reach of children.
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UH 201A | Attention! Contains lead.
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UH 201 | Contains lead. It is forbidden to use on surfaces
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UH 071 | Irritates the respiratory tract.
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UH 070 | Toxic in contact with eyes.
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UH 066 | Repeated exposure may cause dryness or cracking of the skin.
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UH 059 | Dangerous for the ozone layer.
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UH 044 | Danger of explosion when heated in a confined space.
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UH 032 | Contact with acids releases a very toxic gas.
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UH 031 | Contact with acids releases toxic gas.
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UH 029 | Upon contact with water, a toxic gas is formed.
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UH 019 | May form explosive peroxides.
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UH 018 | Flammable/explosive vapors/air mixtures may form during use.
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UH 014 | Reacts violently with water.
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