2-Ethynyl-1,4-dimethylbenzene

Modify Date: 2026-08-15 09:19:27

2-Ethynyl-1,4-dimethylbenzene Structure
2-Ethynyl-1,4-dimethylbenzene structure
Common Name 2-Ethynyl-1,4-dimethylbenzene
CAS Number 74331-70-7 Molecular Weight 130.18600
Density 0.914 Boiling Point 193-194ºC
Molecular Formula C10H10 Melting Point N/A
MSDS N/A Flash Point -13ºC

 Names

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

Name 2-Ethynyl-1,4-dimethylbenzene
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 0.914
Boiling Point 193-194ºC
Molecular Formula C10H10
Molecular Weight 130.18600
Flash Point -13ºC
Exact Mass 130.07800
LogP 2.28470
Index of Refraction 1.541
InChIKey UNUIVBVNLZPXCR-UHFFFAOYSA-N
SMILES C#Cc1cc(C)ccc1C

 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 F: Flammable;Xi: Irritant;
Risk Phrases R11;R41
Safety Phrases 16-26-36
RIDADR UN 1993
HS Code 2902909090

 Synthetic Route

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

~92%

2-Ethynyl-1,4-dimethylbenzene Structure

2-Ethynyl-1,4-d...

CAS#:74331-70-7

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Literature: Apeloig, Yitzhak; Franke, Wilfried; Rappoport, Zvi; Schwarz, Helmut; Stahl, Daniel Journal of the American Chemical Society, 1981 , vol. 103, # 10 p. 2770 - 2780

~95%

2-Ethynyl-1,4-dimethylbenzene Structure

2-Ethynyl-1,4-d...

CAS#:74331-70-7

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Literature: Yates, Keith; Mandrapilias, George Journal of Organic Chemistry, 1980 , vol. 45, # 19 p. 3902 - 3906

~%

2-Ethynyl-1,4-dimethylbenzene Structure

2-Ethynyl-1,4-d...

CAS#:74331-70-7

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Literature: Journal of the American Chemical Society, , vol. 103, # 10 p. 2770 - 2780

~%

2-Ethynyl-1,4-dimethylbenzene Structure

2-Ethynyl-1,4-d...

CAS#:74331-70-7

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Literature: Journal of Fluorine Chemistry, , vol. 43, p. 35 - 52

~58%

2-Ethynyl-1,4-dimethylbenzene Structure

2-Ethynyl-1,4-d...

CAS#:74331-70-7

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Literature: Journal of Organic Chemistry, , vol. 62, # 25 p. 8957 - 8960

~%

2-Ethynyl-1,4-dimethylbenzene Structure

2-Ethynyl-1,4-d...

CAS#:74331-70-7

Learn More
Literature: Journal of Organic Chemistry, , vol. 25, p. 687 - 690

 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.

MFCD05664209
2,5-Dimethylphenylacetylene
2,5-dimethylphenylethyne
2-ethynyl-p-xylene
Benzene,2-ethynyl-1,4-dimethyl
1-ethynyl-2,5-dimethylbenzene
2-ethynyl-1,4-dimethyl-benzene

 2-Ethynyl-1,4-dimethylbenzene | FAQ

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

Q: What are the upstream materials of 2-Ethynyl-1,4-dimethylbenzene?
A: Related upstream materials(CAS) of 2-Ethynyl-1,4-dimethylbenzene: 77403-89-5;74331-90-1;2039-89-6;553-94-6;1122-42-5;4301-14-8;2142-73-6.
Q: What is the boiling point of 2-Ethynyl-1,4-dimethylbenzene?
A: Boiling point of 2-Ethynyl-1,4-dimethylbenzene is 193-194ºC.
Q: What is the English name of 2-Ethynyl-1,4-dimethylbenzene?
A: The English name of 2-Ethynyl-1,4-dimethylbenzene is 2-Ethynyl-1,4-dimethylbenzene.
Q: What is the CAS number of 2-Ethynyl-1,4-dimethylbenzene?
A: CAS number of 2-Ethynyl-1,4-dimethylbenzene is 74331-70-7.
Q: What is the molecular formula of 2-Ethynyl-1,4-dimethylbenzene?
A: Molecular formula of 2-Ethynyl-1,4-dimethylbenzene is C10H10.
Q: What is the molecular weight of 2-Ethynyl-1,4-dimethylbenzene?
A: Molecular weight of 2-Ethynyl-1,4-dimethylbenzene is 130.18600.
Q: What is the SMILES notation of 2-Ethynyl-1,4-dimethylbenzene?
A: SMILES notation of 2-Ethynyl-1,4-dimethylbenzene is C#Cc1cc(C)ccc1C.
Q: What is the InChIKey of 2-Ethynyl-1,4-dimethylbenzene?
A: InChIKey of 2-Ethynyl-1,4-dimethylbenzene is UNUIVBVNLZPXCR-UHFFFAOYSA-N.
Q: What is the safety information for 2-Ethynyl-1,4-dimethylbenzene?
A: Safety information for 2-Ethynyl-1,4-dimethylbenzene: 16-26-36.
Q: What is the LogP of 2-Ethynyl-1,4-dimethylbenzene?
A: LogP of 2-Ethynyl-1,4-dimethylbenzene is 2.28470.

 2-Ethynyl-1,4-dimethylbenzenefactory

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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