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Brief hazard characteristics

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.

The number of entries in this glossary is 122.
Search by glossary topics (regular expressions allowed)

Glossaries

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