C8H9Br
185.06 g/mol
Industrial ChemicalDanger
4-Methylbenzyl bromide
CAS104-81-4EC203-240-6
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
military tear gas
4-Methylbenzyl bromide, also known as p-xylyl bromide or T-stoff, is a toxic organic compound historically used as a military tear gas. It is a colorless liquid with a pleasant aromatic odor and became one of the earliest chemical weapons deployed during World War I.
military tear gasorganic synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
P-xylyl chloride
CAS104-82-5
chemical intermediate for synthesis
ReferenceSame Category
P-tolunitrile
CAS104-85-8
synthesis of pharmaceutical and agrochemical intermediates
ReferenceSame Category
5-ethyl-2-methylpyridine
CAS104-90-5
intermediate for nicotinic acid
ReferenceSame Category
4-bromoanisole
CAS104-92-7
chemical intermediate
Safety Reference
Danger
H314Causes severe skin burns and eye damage
Customs Tariff Classification
The international HS code for 4-Methylbenzyl bromide (CAS 104-81-4) is 2903.99.
HS code (international, 6-digit)
2903.99
EU CN code (8-digit)
2903 99 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1-(bromomethyl)-4-methylbenzene
InChIKey
WZRKSPFYXUXINF-UHFFFAOYSA-N
SMILES
CC1=CC=C(C=C1)CBr
Synonyms (16)
- 4(bromomethyl)toluene
- 4-Methylbenzyl bromide
- 4-methybenzyl bromide
- 4-methylphenylmethyl bromide
- P-XYLYL BROMIDE
- alpha-Bromo-p-xylene
- alphaBromopxylol
- omega-Bromo-p-xylene
- p(Bromomethyl)toluene
- p-Xylyl alpha-bromide
- p-Xylylbromid
- pMethylbenzyl bromide
- pXylene, alphabromo
- para methylbenzyl bromide
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