Substance

ID:734634

Names and Identifiers
IUPAC Traditional name
2-pentyne
IUPAC name
pent-2-yne
Synonyms
2-Pentyne2-戊炔Ethyl methyl acetylene
Registration numbers
Beilstein Number
CAS Number
MDL Number
EC Number
Properties
Physical Property
Flash Point
-20°C(-4°F)
Density
0.710
Refractive Index
1.4030
Melting Point
-109°C
Boiling Point
55-56°C
Safety Information
GHS Pictograms
GHS07
Acute toxicity (oral, dermal, inhalation), category 4
Skin irritation, category 2
Eye irritation, category 2
Skin sensitisation, category 1
Specific Target Organ Toxicity – Single exposure, category 3
GHS02
Flammable gases, category 1
Flammable aerosols, categories 1,2
Flammable liquids, categories 1,2,3
Self-reactive substances and mixtures, Types B,C,D,E,F
Pyrophoric liquids, category 1
Pyrophoric solids, category 1
Self-heating substances and mixtures
Substances and mixtures, which in contact with water, emit flammable gases, categories 1,2,3
Organic peroxides, Types B,C,D,E,F
GHS08
Respiratory sensitization, category 1
Germ cell mutagenicity, categories 1A,1B,2
Carcinogenicity, categories 1A,1B,2
Reproductive toxicity, categories 1A,1B,2
Specific Target Organ Toxicity – Single exposure, categories 1,2
Specific Target Organ Toxicity – Repeated exposure, categories 1,2
Aspiration Hazard, category 1
European Hazard Symbols
Harmful Harmful (X)
Flammable Flammable (F)
TSCA Listed
Risk Statements
11-36/37/38-65
GHS Hazard statements
H225-H304-H315-H319-H335
Safety Statements
9-16-26-29-33-37-62
Hazard Class
3
Packing Group
II
GHS Precautionary statements
P210-P280G-P301+P310-P305+P351+P338-P315-P403
UN Number
UN3295
Product Information
Purity
98+%
Molecule Details
No Data Available
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Molecular Spectra
No Data Available
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References
• 2-Alkynes are metallated almost exclusively at the terminal position by t-BuLi in ether, in the presence of TMEDA. Subsequent reaction, e.g. with TMS chloride, gives propargylic silanes: Synthesis, 111 (1984).