3-Butyn-2-ol

CAS 2028-63-9HC≡CCH(OH)CH3Chemical Synthesis

3-Butyn-2-ol (CAS: 2028-63-9), a flammable liquid with the chemical formula HC≡CCH(OH)CH₃, is a valuable organic building block. With a molecular weight of 70.09 g/mol, it is frequently employed in chemical synthesis and research laboratories. Its alkyne functionality and secondary alcohol group make it a versatile intermediate for creating more complex organic molecules and speciality chemicals.

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3-Butyn-2-ol (HC≡CCH(OH)CH3) — chemical structure, CAS 2028-63-9; Chemistry, fine chemical supplied by Tech Serve Solutions

AlkynesBuilding BlocksChemical SynthesisOrganic Building BlocksTerminal

01 /Applications

Organic Synthesis Intermediate

3-Butyn-2-ol serves as a key intermediate in the synthesis of various organic compounds. Its terminal alkyne and hydroxyl functionalities allow for diverse chemical transformations, contributing to the construction of complex molecular architectures.

Pharmaceutical Research

This compound can be utilised as a building block in the development of novel pharmaceutical agents. Its structure provides a scaffold for generating diverse chemical libraries for drug discovery programmes.

Speciality Chemical Production

The unique reactivity of 3-Butyn-2-ol makes it suitable for the production of speciality chemicals with specific properties. It is employed in multi-step syntheses within the fine chemical industry.

02 /Properties

Molecular weight	70.09
Linear formula	HC≡CCH(OH)CH3
Assay	97%
Boiling point	66-67 °C/150 mmHg(lit.)
Density	0.894 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.426(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Toxic (GHS06) — Toxic

Danger

Hazard statements

H226Flammable liquid and vapour
H300Fatal if swallowed
H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements

P264Wash thoroughly after handling
P301IF SWALLOWED
P305IF IN EYES

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	26 °C / 78.8 °F
Transport (UN / ADR)	UN 2929 6.1/PG 2
Water hazard class (WGK, DE)	3
Hazard codes (EU)	T
Risk statements (R)	10-25-36/38
Safety statements (S)	26-45

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

2028-63-9

MDL number

MFCD00004541

PubChem substance

24868376

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is 3-Butyn-2-ol used for?

3-Butyn-2-ol is primarily used as an intermediate in organic synthesis, for pharmaceutical research, and in the production of speciality chemicals.

What are the CAS number and chemical formula for 3-Butyn-2-ol?

The CAS number is 2028-63-9 and the chemical formula is HC≡CCH(OH)CH₃.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies 3-Butyn-2-ol with a minimum purity of 97% (Assay). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.

How should 3-Butyn-2-ol be handled safely?

3-Butyn-2-ol is flammable and harmful if swallowed. Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area. Refer to the Safety Data Sheet for full hazard information.