3-Methylphenylacetylene

Modify Date: 2026-07-07 17:15:33

3-Methylphenylacetylene Structure
3-Methylphenylacetylene structure
Common Name 3-Methylphenylacetylene
CAS Number 766-82-5 Molecular Weight 116.160
Density 0.9±0.1 g/cm3 Boiling Point 176.3±19.0 °C at 760 mmHg
Molecular Formula C9H8 Melting Point N/A
MSDS N/A Flash Point 47.4±15.6 °C

Summary: 3-Methylphenylacetylene, also known as 3-Ethynyltoluene, has a Chinese name of 3-甲基苯乙炔. The molecular formula is C9H8, with a molecular weight of 116.160. It appears as a transparent yellowish-brown liquid with a boiling point of 176.3±19.0 °C and a density of 0.9±0.1 g/cm³. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 3-Ethynyltoluene
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 0.9±0.1 g/cm3
Boiling Point 176.3±19.0 °C at 760 mmHg
Molecular Formula C9H8
Molecular Weight 116.160
Flash Point 47.4±15.6 °C
Exact Mass 116.062599
LogP 2.86
Vapour Pressure 1.5±0.2 mmHg at 25°C
Index of Refraction 1.534
InChIKey RENYIDZOAFFNHC-UHFFFAOYSA-N
SMILES C#Cc1cccc(C)c1
Storage condition Flammables area

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes Xi:Irritant;
Risk Phrases R10;R36/37/38;R65
Safety Phrases S16-S26-S36
RIDADR UN 1993 3/PG 3
WGK Germany 3
Packaging Group III
Hazard Class 3
HS Code 2902909090

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2902909090
Summary 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

MFCD01318174
1-Ethynyl-3-methylbenzene
3-Methylphenylacetylene

 3-Methylphenylacetylene | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the molecular formula of 3-Ethynyltoluene?
A: Molecular formula of 3-Ethynyltoluene is C9H8.
Q: What is the InChIKey of 3-Ethynyltoluene?
A: InChIKey of 3-Ethynyltoluene is RENYIDZOAFFNHC-UHFFFAOYSA-N.
Q: What is the SMILES notation of 3-Ethynyltoluene?
A: SMILES notation of 3-Ethynyltoluene is C#Cc1cccc(C)c1.
Q: What are the storage conditions for 3-Ethynyltoluene?
A: Storage conditions for 3-Ethynyltoluene: Flammables area.
Q: What is the molecular weight of 3-Ethynyltoluene?
A: Molecular weight of 3-Ethynyltoluene is 116.160.
Q: What is the boiling point of 3-Ethynyltoluene?
A: Boiling point of 3-Ethynyltoluene is 176.3±19.0 °C at 760 mmHg.
Q: What is the English name of 3-Ethynyltoluene?
A: The English name of 3-Ethynyltoluene is 3-Ethynyltoluene.
Q: What is the CAS number of 3-Ethynyltoluene?
A: CAS number of 3-Ethynyltoluene is 766-82-5.
Q: What English synonyms does 3-Ethynyltoluene have?
A: English synonyms of 3-Ethynyltoluene: MFCD01318174, 1-Ethynyl-3-methylbenzene, 3-Methylphenylacetylene.
Q: What is the LogP of 3-Ethynyltoluene?
A: LogP of 3-Ethynyltoluene is 2.86.

 3-Methylphenylacetylenefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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