CAS 143874-13-9|1-Ethynyl-3,4-fluorobenzene

Introduction：Basic information about CAS 143874-13-9|1-Ethynyl-3,4-fluorobenzene, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

Table of Contents

1. Names
2. Chemical & Physical Properties
3. Safety Information
4. Customs
5. Synonyms

Common Name	1-Ethynyl-3,4-fluorobenzene
CAS Number	143874-13-9	Molecular Weight	138.114
Density	1.2±0.1 g/cm3	Boiling Point	145.9±30.0 °C at 760 mmHg
Molecular Formula	C₈H₄F₂	Melting Point	/
MSDS	ChineseUSA	Flash Point	31.4±12.4 °C
Symbol	GHS02	Signal Word	Danger

Names

Name	3,4-Difluorophenylacetylene
Synonym	More Synonyms

Chemical & Physical Properties

Density	1.2±0.1 g/cm3
Boiling Point	145.9±30.0 °C at 760 mmHg
Molecular Formula	C₈H₄F₂
Molecular Weight	138.114
Flash Point	31.4±12.4 °C
Exact Mass	138.028107
LogP	2.41
Vapour Pressure	6.0±0.3 mmHg at 25°C
Index of Refraction	1.492
InChIKey	XFPAOXIWRDDQGG-UHFFFAOYSA-N
SMILES	C#Cc1ccc(F)c(F)c1

Safety Information

Symbol	GHS02
Signal Word	Danger
Hazard Statements	H225
Precautionary Statements	P210
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	F: Flammable;
Risk Phrases	R11
RIDADR	UN 1993 3/PG 2
HS Code	2903999090

Customs

HS Code	2903999090
Summary	2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Synonyms

3,4-Difluorophenylacetylene

1-Ethynyl-3,4-fluorobenzene

4-Ethynyl-1,2-difluorobenzene

Benzene, 4-ethynyl-1,2-difluoro-

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