Substance profile
1H-Benzotriazole
1H-Benzotriazole is needles from chloroform or benzene with a no odor.
01 · Identification
What 1H-Benzotriazole is
1H-Benzotriazole is needles from chloroform or benzene with a no odor. Its molecular formula is C6H5N3 and its molecular weight is 119.12 g/mol. It boils at 260 °C, melts at 100 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
1H-Benzotriazole identifiers and molecular data
1H-Benzotriazole CAS number and EC number
1H-Benzotriazole molecular formula and molecular weight
03 · GHS classification
1H-Benzotriazole hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
1H-Benzotriazole pictograms and signal word
1H-Benzotriazole hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
1H-Benzotriazole hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to 1H-Benzotriazole. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for 1H-Benzotriazole
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of 1H-Benzotriazole issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
1H-Benzotriazole precautionary statements
CLP Annex VI assigns 3 precautionary statements to 1H-Benzotriazole. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Disposal
What has to happen to the contents and the empty container.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
1H-Benzotriazole name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | 1 H -бензотриазол |
| Spanish español | 1 H -Benzotriazol |
| Czech čeština | 1 H -benzotriazol |
| Danish dansk | 1 H -benzotriazol |
| German Deutsch | 1 H -Benzotriazol |
| Estonian eesti | 1 H -bensotriasool |
| Greek ελληνικά | 1 H -βενζοτριαζόλιο |
| English English | 1 H -benzotriazole |
| French français | 1 H -benzotriazole |
| Croatian hrvatski | 1 H -benzotriazol |
| Italian italiano | 1 H -benzotriazolo |
| Latvian latviešu | 1 H -benzotriazols |
| Lithuanian lietuvių | 1 H -benzotriazolas |
| Hungarian magyar | 1 H -benzotriazol |
| Maltese Malti | 1 H -benżotriażol |
| Dutch Nederlands | 1 H -benzotriazool |
| Polish polski | 1 H -benzotriazol |
| Portuguese português | 1 H -benzotriazole |
| Romanian română | 1 H -benzotriazol |
| Slovak slovenčina | 1 H -benzotriazol |
| Slovenian slovenščina | 1 H -benzotriazol |
| Finnish suomi | 1 H -bentsotriatsoli |
| Swedish svenska | 1- H -bensotriazol |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
1H-Benzotriazole GHS label elements
Everything CLP Annex VI fixes for 1H-Benzotriazole, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
1H-Benzotriazole
- Toxic to aquatic life with long lasting effects.
- Avoid release to the environment.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 1H-Benzotriazole in the GHS label constructor →
07 · Health hazards
1H-Benzotriazole health hazards and exposure limits
1H-Benzotriazole hazard summary
Benzotriazole is a potential skin sensitizer used in the aircraft industry as a corrosion inhibitor. [Kanerva, p. 1259] An eye irritant; May cause skin sensitization; [ICSC]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
1H-Benzotriazole carcinogenicity classification
Studied by the US National Toxicology Program: TR-088: Bioassay of 1H-Benzotriazole for Possible Carcinogenicity (CASRN 95-14-7) (1978 )
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
08 · Physical and chemical properties
1H-Benzotriazole properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
1H-Benzotriazole boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 260 °C (500 °F) | decomposes | HSDB |
| 204 °C (399.2 °F) | at 15 mmHg (reduced pressure) | HSDB | |
| 203.89 °C (399 °F) | at 15 mmHg (reduced pressure) | CAMEO |
1H-Benzotriazole melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 100 °C (212 °F) | HSDB | |
| 98.5 °C (209.3 °F) | ICSC | ||
| 98.89 °C (210 °F) | range, midpoint shown | CAMEO |
1H-Benzotriazole density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.36 g/cm³ | ICSC | |
| 1.36 g/cm³ | at 20 °C | HSDB |
1H-Benzotriazole solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Slightly soluble in water | HSDB | |
| In water, 1-5 g/L at 23.7 °C | at 23.7 °C | HSDB | |
| In water, 1.98X10+4 mg/L at 25 °C | at 25 °C | HSDB |
1H-Benzotriazole vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0375 mmHg | at 20 °C | ICSC |
| 0.075 mmHg | below this value, at 25 °C | HSDB |
1H-Benzotriazole flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 170 °C (338 °F) | HSDB | |
| 192.5 °C (378.5 °F) | range, midpoint shown | ICSC |
1H-Benzotriazole autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 210 °C (410 °F) | ICSC |
1H-Benzotriazole lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | May detonate at 220 °C or during vacuum distillation. | at 220 °C | HSDB |
1H-Benzotriazole vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 4.1 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
1H-Benzotriazole storage and handling
1H-Benzotriazole safe storage
Well closed.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
1H-Benzotriazole storage conditions
Keep container tightly closed in a dry and well-ventilated place.
Source: Hazardous Substances Data Bank (HSDB)
1H-Benzotriazole incompatible materials
Incompatible materials: Strong oxidizing agents, heavy metals.
Source: Hazardous Substances Data Bank (HSDB)
1H-Benzotriazole reactivity
The triazoles are a group of highly explosive materials that are sensitive to heat, friction, and impact. Sensitivity varies with the type substitution to the triazole ring. Metal chelated and halogen substitution of the triazol ring make for a particularly heat sensitive material. Azido and nitro derivatives have been employed as high explosives. No matter the derivative these materials should be treated as explosives.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1H-Benzotriazole in the storage compatibility matrix →
10 · Questions
1H-Benzotriazole — frequently asked questions
What is the CAS number of 1H-Benzotriazole?
The CAS number of 1H-Benzotriazole is 95-14-7. Its EC number is 202-394-1.
What is the chemical formula of 1H-Benzotriazole?
The molecular formula of 1H-Benzotriazole is C6H5N3 and its molecular weight is 119.12 g/mol.
What does a 1H-Benzotriazole label have to show?
Under CLP Annex VI the label for 1H-Benzotriazole carries the pictogram Environment and the signal word is Warning.
Is 1H-Benzotriazole flammable?
CLP Annex VI assigns 1H-Benzotriazole no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 170 °C (338 °F) (HSDB).
Is 1H-Benzotriazole a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 1H-Benzotriazole. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the boiling point of 1H-Benzotriazole?
The boiling point reported for 1H-Benzotriazole is 260 °C (500 °F), decomposes (HSDB).
What is the melting point of 1H-Benzotriazole?
The melting point reported for 1H-Benzotriazole is 100 °C (212 °F) (HSDB).
How should 1H-Benzotriazole be stored?
Keep container tightly closed in a dry and well-ventilated place. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to 1H-Benzotriazole
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