Health hazard · Specific target organ toxicity - single exposure
H336 — May cause drowsiness or dizziness
Health hazard statements describe what the substance does to a person exposed to it. 47 substances with a harmonised EU classification carry this code.
01 · Wording
What H336 says
May cause drowsiness or dizziness.
CLP Annex III · Health hazards
Specific target organ toxicity - single exposure GHS chapter 3.8
Category 3 narcotic · pictogram GHS07 (exclamation mark) · signal word Warning
Unchanged since 2009.
Present in every UN GHS edition from Rev.3 (2009) to Rev.11 (2025), with the same wording throughout.
Nine editions of the UN model text, 86 hazard statements, 19 of which ever moved. Read the full story in what changed in UN GHS Rev.11.
02 · Legal status
Where H336 is current
GHS is a United Nations model text, revised every two years, and each jurisdiction adopts a revision on its own timetable. A code can be legally current in one system and deleted in another — that is normal, not an error.
| Jurisdiction | Basis | Status of H336 |
|---|---|---|
| EU CLP | Regulation (EC) 1272/2008 CLP Annex IV, Part 2 (consolidated) | Current |
| US OSHA HazCom | 29 CFR 1910.1200 Appendix C UN GHS Rev.7 (final rule of 20 May 2024) | Current |
| US HazCom 2012 | legacy · GHS Rev.3 UN GHS Rev.3, Annex 3 | Current |
| UN GHS | Rev.11 (2025) UN GHS Rev.11, Annex 3 | Current |
Currently in force under: EU CLP, US OSHA HazCom, US HazCom 2012, UN GHS. Sources: EU CLP · US OSHA HazCom · US HazCom 2012 · UN GHS
03 · Substances
Substances carrying H336
Every entry whose harmonised CLP Annex VI classification includes this hazard statement. Substances with a reference page here open on this site; the rest open on ghssymbols.com.
- (2-methylpropyl)lithium; isobutyllithium CAS 920-36-5
- (RS)-4-[1-(2,3-dimethylphenyl)ethyl]-1H-imidazole;; medetomidine CAS 86347-14-0
- 1-bromopropane; n-propyl bromide CAS 106-94-5
- 1-ethoxypropan-2-ol; 2PG1EE; 1-ethoxy-2-propanol; propylene glycol monoethyl ether [1]; 2-ethoxy-1-methylethyl acetate; 2PG1EEA [2] CAS 1569-02-4[1]54839-24
- 1-methoxy-2-propanol; monopropylene glycol methyl ether CAS 107-98-2
- 1,4-dimethylcyclohexane CAS 589-90-2
- 2-methoxy-2-methylbutane; tert-amyl methyl ether CAS 994-05-8
- 2-methyl-3-(trimethoxysilyl)propyl-2-propenoate hydrolysis product with silica CAS 125804-20-8
- 2-methylpropan-1-ol; iso-butanol CAS 78-83-1
- 2,4,4-trimethylpentene CAS 25167-70-8
- acetone CAS 67-64-1
- acetone oxime CAS 127-06-0
- ammonium bromide CAS 12124-97-9
- butan-1-ol; n-butanol CAS 71-36-3
- butan-2-ol [1]; (S)-butan-2-ol [2]; (R)-butan-2-ol [3]; (±)-butan-2-ol [4] CAS 78-92-2[1]4221-99-2[
- butanone oxime; ethyl methyl ketoxime; ethyl methyl ketone oxime CAS 96-29-7
- chloralose (INN); (R)-1,2-O-(2,2,2-trichloroethylidene)-α-D-glucofuranose; glucochloralose; anhydroglucochloral CAS 15879-93-3
- cyclohexane CAS 110-82-7
- dicamba (ISO); 2,5-dichloro-6-methoxybenzoic acid; 3,6-dichloro-2-methoxybenzoic acid CAS 1918-00-9
- diethyl ether CAS 60-29-7
- diisopropyl ether [1]; dipropyl ether [2] CAS 108-20-3[1]111-43-3[
- dimethyl disulphide CAS 624-92-0
- ethyl acetate CAS 141-78-6
- ethylene CAS 74-85-1
- ethylene oxide CAS 75-21-8
- fenpropidin (ISO); (R,S)-1-[3-(4-tert-butylphenyl)-2-methylpropyl]piperidine CAS 67306-00-7
- heptane CAS 142-82-5[1]108-08-7[
- hexan-2-one; methyl butyl ketone; butyl methyl ketone; methyl-n-butyl ketone CAS 591-78-6
- hexane CAS 110-54-3
- hexane (containing < 5 % n-hexane (203-777-6)); 2-methylpentane [1]; 3-methylpentane [2]; 2,2-dimethylbutane [3]; 2,3-dimethylbutane [4] CAS 107-83-5[1]96-14-0[2
- isopentane; 2-methylbutane CAS 78-78-4
- isopropyl alcohol CAS 67-63-0
- methyl 2,5-dichlorobenzoate CAS 2905-69-3
- methyl acetate CAS 79-20-9
- methyl ethyl ketone CAS 78-93-3
- methyl isobutyl ketone CAS 108-10-1
- methylcyclohexane CAS 108-87-2
- n-butyl acetate CAS 123-86-4
- octane; n-octane [1]; 2,2,4-trimethylpentane [2]; 2,3,3-trimethylpentane [3]; 3,3-dimethylhexane [4]; 2,2,3-trimethylpentane [5]; 2,3,4-trimethylpentane [6]; 3,4-dimethylhexane [7]; 2,3-dimethylhexane [8]; 2,4-dimethylhexane [9]; 4-methylheptane [10]; 3-methylheptane [11]; 2,2-dimethylhexane [12]; 2,5-dimethylhexane [13]; 2-methylheptane [14]; 2,2,3,3-tetramethylbutane [15]; 3-ethyl-2-methylpentane [16]; 3-ethylhexane [17]; 3-ethyl-3-methylpentane [18]; isooctane [19] CAS 111-65-9[1]540-84-1[
- pentan-3-one; diethyl ketone CAS 96-22-0
- pentane CAS 109-66-0
- propan-1-ol; n-propanol CAS 71-23-8
- propyl acetate [1]; isopropyl acetate [2] CAS 109-60-4[1]108-21-4[
- propyl formate [1]; isopropyl formate [2] CAS 110-74-7[1]625-55-8[
- thiacloprid (ISO);; (Z)-3-(6-chloro-3-pyridylmethyl)-1,3-thiazolidin-2-ylidenecyanamide;; {(2Z)-3-[(6-chloropyridin-3-yl)methyl]-1,3-thiazolidin-2-ylidene}cyanamide CAS 111988-49-9
- toluene CAS 108-88-3
- trichloroethylene CAS 79-01-6
Nothing matches that filter.
All hazard statements
The full list of H-codes with the jurisdiction switch lives on the hazard statements hub. For what to do about the hazard, see precautionary statements (P-codes).
Wording quoted from the regulation named above. Substance counts come from harmonised classifications in CLP Annex VI — the statements on a real product also depend on the supplier's own classification. Always check the supplier safety data sheet.