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Sigma-Aldrich

5-Methyl-1H-benzotriazole

98%

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Synonym(s):
5-Methyl-1,2,3-benzotriazole, 5-Methylbenzotriazole, 5-Tolyltriazole, 6-Methyl-1,2,3-benzotriazole, 6-Methyl-1H-benzotriazole, 6-Tolyltriazole
Empirical Formula (Hill Notation):
C7H7N3
CAS Number:
136-85-6
Molecular Weight:
133.15
Beilstein:
116658
EC Number:
205-265-8
MDL number:
MFCD00005702
PubChem Substance ID:
24851750
NACRES:
NA.22

Assay

98%

form

powder

bp

210-212 °C/12 mmHg (lit.)

mp

80-82 °C (lit.)

SMILES string

Cc1ccc2[nH]nnc2c1

InChI

1S/C7H7N3/c1-5-2-3-6-7(4-5)9-10-8-6/h2-4H,1H3,(H,8,9,10)

InChI key

LRUDIIUSNGCQKF-UHFFFAOYSA-N

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General description

5-Methyl-1H-benzotriazole is an active component of aircraft deicing and anti-icing fluid. It prevents the corrosion of copper and brass in a variety of corrosive environments.

Application

5-Methyl-1H-benzotriazole was used in determination of benzothiazoles and benzotriazoles in waste water samples by GC-MS.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302 - H315 - H319 - H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Carmen Domínguez et al.
Journal of chromatography. A, 1230, 117-122 (2012-02-18)
Benzothiazoles (BTHs) and benzotriazoles (BTRs) belong to a high production volume chemicals widely used in both industrial and household applications. Since they are recalcitrant to biodegradation, they are widespread in the environment. However, the BTHs and BTRs determination in environmental
Corrosion inhibition of copper by tolyltriazole.
Walker R.
Corrosion (Houston, TX, United States), 32(8), 339-341 (1976)
Devon A Cancilla et al.
Environmental toxicology and chemistry, 22(1), 134-140 (2002-12-31)
This paper presents the results of a number of field and laboratory studies to evaluate the environmental impact of aircraft deicing and anti-icing fluids (ADAFs) on aquatic systems. Both 5-methyl-1H-benzotriazole (5-MeBt) and 4-methyl-1H-benzotriazole (4-MeBt), known additives to ADAFs, were found
Rozanna Avagyan et al.
Environmental science and pollution research international, 22(8), 5842-5849 (2014-10-25)
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