Hazard Levels — Detailed H-Code Mapping
Complete reference of which hazard statements (H-codes) map to each hazard level in NextSDS.
NextSDS rates each product's intrinsic hazards based on the classification in section 2 of the SDS (GHS/CLP). The hazard is expressed using five levels, where level 5 represents the most dangerous products and level 1 the least. The overall level is determined by the highest applicable level across all three risk categories: health, environmental, and physical/safety.
For an overview of what each level means, see Hazard Levels (1–5).
Health risks
Hazard statements related to human health effects — from acute toxicity to chronic diseases.
| Level | H-codes |
|---|---|
| 5 | H300 (fatal if swallowed), H310 (fatal in contact with skin), H330 (fatal if inhaled), H340 (may cause genetic defects), H350 (may cause cancer), H350i (may cause cancer by inhalation), H360 (may damage fertility or the unborn child), H360D, H360Df, H360F, H360FD, H360Fd, EUH380 |
| 4 | H301 (toxic if swallowed), H304 (may be fatal if swallowed and enters airways), H311 (toxic in contact with skin), H314 (causes severe skin burns and eye damage), H317 (may cause allergic skin reaction), H318 (causes serious eye damage), H331 (toxic if inhaled), H334 (may cause allergy or asthma symptoms if inhaled), H341 (suspected of causing genetic defects), H351 (suspected of causing cancer), H361 (suspected of damaging fertility), H361d, H361f, H361fd, H370 (causes damage to organs), H372 (causes damage to organs through prolonged exposure), EUH070, EUH071, EUH381 |
| 3 | H302 (harmful if swallowed), H312 (harmful in contact with skin), H319 (causes serious eye irritation), H332 (harmful if inhaled), H362 (may cause harm to breast-fed children), H371 (may cause damage to organs), H373 (may cause damage to organs through prolonged exposure), EUH202, EUH203, EUH204, EUH205, EUH206, EUH207, EUH208, EUH211, EUH212 |
| 2 | H303 (may be harmful if swallowed), H305 (may be harmful if swallowed and enters airways), H313 (may be harmful in contact with skin), H315 (causes skin irritation), H320 (causes eye irritation), H333 (may be harmful if inhaled), H335 (may cause respiratory irritation), H336 (may cause drowsiness or dizziness), EUH066, EUH401 |
| 1 | H316 (causes mild skin irritation), EUH210 |
Environmental risks
Hazard statements related to ecological impact — aquatic toxicity, persistence, and ozone depletion.
| Level | H-codes |
|---|---|
| 5 | H410 (very toxic to aquatic life with long-lasting effects), H420 (harms public health and the environment by destroying ozone), EUH430, EUH440, EUH441, EUH450, EUH451, EUH059 |
| 4 | H400 (very toxic to aquatic life), H411 (toxic to aquatic life with long-lasting effects), H441 (very toxic to terrestrial life), EUH431 |
| 3 | H401 (toxic to aquatic life), H412 (harmful to aquatic life with long-lasting effects), H413 (may cause long-lasting harmful effects to aquatic life) |
| 2 | H402 (harmful to aquatic life), EUH401 |
| 1 | EUH210 |
Physical / safety risks
Hazard statements related to flammability, explosiveness, oxidising properties, and reactivity.
| Level | H-codes |
|---|---|
| 5 | H200 (unstable explosive), H201 (explosive; mass explosion hazard), H202 (explosive; severe projection hazard), H203 (explosive; fire, blast or projection hazard), EUH006 |
| 4 | H204 (fire or projection hazard), H205 (may mass explode in fire), H206 (fire, blast or projection hazard), H207 (fire or projection hazard), H208 (fire hazard), H220 (extremely flammable gas), H222 (extremely flammable aerosol), H224 (extremely flammable liquid and vapour), H230 (may react explosively even in the absence of air), H231 (may react explosively at elevated pressure/temperature), H240 (heating may cause an explosion), H241 (heating may cause a fire or explosion), H250 (catches fire spontaneously if exposed to air), H271 (may cause fire or explosion; strong oxidiser), EUH001, EUH018, EUH019, EUH029, EUH031, EUH032, EUH044 |
| 3 | H221 (flammable gas), H223 (flammable aerosol), H225 (highly flammable liquid and vapour), H228 (flammable solid), H229 (pressurised container), H232 (may ignite spontaneously if exposed to air), H242 (heating may cause a fire), H251 (self-heating; may catch fire), H260 (in contact with water releases flammable gases which may ignite spontaneously), H261 (in contact with water releases flammable gas), H270 (may cause or intensify fire; oxidiser), H280 (contains gas under pressure), H281 (contains refrigerated gas), EUH014, EUH030, EUH209 |
| 2 | H226 (flammable liquid and vapour), H227 (combustible liquid), H252 (self-heating in large quantities), H272 (may intensify fire; oxidiser), H290 (may be corrosive to metals), EUH201, EUH201A, EUH209A |
| 1 | EUH210 |
Scoring rules
- Each hazard statement found in section 2 of the SDS is mapped to a level per the tables above.
- The product's level for each risk category (health, environmental, safety) is the maximum level found.
- The product's overall hazard level is the maximum across all three categories.
- A single Level 5 statement (e.g. H350 — may cause cancer) is enough to classify the entire product as Level 5.
- EUH statements (EU-specific supplementary hazard information) are included in the mapping where applicable.
Related
- Hazard Levels overview — what each level means at a glance
- EMKG risk assessment — workplace risk assessment per exposure route