but-2-yn-1-ol （CAS# 764-01-2)

Chemical Property:

Molecular Formula	C4H6O
Molar Mass	70.09
Density	0.937 g/mL at 25 °C (lit.)
Melting Point	-2.2 °C (lit.)
Boling Point	142-143 °C (lit.)
Flash Point	125°F
Solubility	Miscible with chloroform and methanol.
Vapor Presure	1.67mmHg at 25°C
Appearance	Liquid
Specific Gravity	0.937
Color	Clear colorless to light yellow
BRN	1733676
pKa	13.14±0.10(Predicted)
Storage Condition	Refrigerator
Stability	Stable. Flammable.
Refractive Index	n20/D 1.453(lit.)

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Product Detail

Product Tags

Risk Codes	R10 – Flammable R43 – May cause sensitization by skin contact R52/53 – Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36/37/38 – Irritating to eyes, respiratory system and skin.
Safety Description	S36/37 – Wear suitable protective clothing and gloves. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S16 – Keep away from sources of ignition.
UN IDs	UN 1987 3/PG 3
WGK Germany	3
HS Code	29052990
Hazard Note	Irritant
Hazard Class	3
Packing Group	III

Introduction

2-butynyl-1-ol, also known as butynol, is an organic compound. The following is an introduction to the properties, uses, preparation methods and safety information of 2-butyn-1-ol:

Properties: It is a colorless liquid with a special pungent smell.

- 2-Butyn-1-ol is soluble in water and many organic solvents such as ethanol and ether.

- It is an alcohol compound with alkyne functional groups that has some chemical properties of alcohols and alkynes.

Use:

- 2-butyn-1-ol is widely used in organic synthesis as a reaction intermediate or reagent. It can be used as a starting material, solvent, or catalyst for the synthesis of organic compounds.

- It can also be used in the preparation of other similar compounds such as ethers, ketones, and etherketones.

Method:

- 2-Butyno-1-ol can be prepared by the reaction of hydrogenated acetone alcohol and chloroform.

- Another common preparation method is to condense ethyl mercaptan and acetone in the presence of an amino catalyst, and then to obtain 2-butyn-1-ol by addition of mercury chloride.

Safety Information:

- 2-Butyn-1-ol is an irritating substance that may cause irritation and damage to the eyes, skin, and respiratory tract.

- Appropriate protective equipment such as protective gloves and goggles should be worn when handling.

- The compound has a limited impact on the environment, but care should be taken to comply with relevant environmental regulations when handling and disposing of it.

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