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3-Butyn-2-ol

CAS No.
2028-63-9
Chemical Name:
3-Butyn-2-ol
Synonyms
but-3-yn-2-ol;Butynol;1-Ethynylethanol;3-butyn-2-0l;3-Bytyn-2-ol;3-Butyn-2-ol;3-Butyne-2-Ol98%;3-Butyn-2-ol,97%;3-Butyn-2-ol >(R)-3-BUTYNE-2-OL
CBNumber:
CB8202679
Molecular Formula:
C4H6O
Molecular Weight:
70.09
MDL Number:
MFCD00004541
MOL File:
2028-63-9.mol
MSDS File:
SDS
Last updated:2026-05-28 03:24:44

3-Butyn-2-ol Properties

Melting point -1.5°C
alpha 0°(c=1, CHCl3)
Boiling point 66-67 °C/150 mmHg (lit.)
Density 0.894 g/mL at 25 °C (lit.)
vapor pressure 11hPa at 20℃
refractive index n20/D 1.426(lit.)
Flash point 78 °F
storage temp. Flammables area
Water Solubility Completely miscible in water
pka 13.28±0.20(Predicted)
form Liquid
Specific Gravity 0.894
color Clear colorless to light yellow
BRN 635722
InChI 1S/C4H6O/c1-3-4(2)5/h1,4-5H,2H3
InChIKey GKPOMITUDGXOSB-UHFFFAOYSA-N
SMILES CC(O)C#C
LogP 1.1 at 35℃
CAS DataBase Reference 2028-63-9(CAS DataBase Reference)
NIST Chemistry Reference 3-Butyn-2-ol(2028-63-9)
EPA Substance Registry System 3-Butyn-2-ol (2028-63-9)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Skull and Crossbones (GHS06)
GHS02,GHS06
Signal word  Danger
Hazard statements  H300-H315-H319-H226
Precautionary statements  P501-P270-P240-P210-P233-P243-P241-P242-P264-P280-P370+P378-P337+P313-P305+P351+P338-P362+P364-P303+P361+P353-P332+P313-P301+P310+P330-P403+P235-P405
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  T,F
Risk Statements  10-25-36/38-36/37/38-24/25
Safety Statements  26-45-36/37/39-16
RIDADR  UN 2929 6.1/PG 2
WGK Germany  3
RTECS  ES0709800
10
Hazard Note  Irritant
TSCA  TSCA listed
HazardClass  6.1
PackingGroup  II
HS Code  29052900
Storage Class 3 - Flammable liquids
Hazard Classifications Acute Tox. 2 Dermal
Acute Tox. 2 Inhalation
Acute Tox. 2 Oral
Aquatic Chronic 3
Eye Dam. 1
Flam. Liq. 2
Self-react. G
Skin Irrit. 2
REACH Registrations Active
Limited Quantities 100ml (liquid) or 0.5 Kg (solid)
Excepted Quantities Max Inner Pack (1g or 1ml) and Max Outer Pack (500g or 500ml)
NFPA 704
3
4 0

3-Butyn-2-ol price More Price(51)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 447986 3-Butyn-2-ol 97% 2028-63-9 25ml $233 2026-04-30 Buy
Sigma-Aldrich 447986 3-Butyn-2-ol 97% 2028-63-9 100ml $292 2026-04-30 Buy
TCI Chemical B0750 3-Butyn-2-ol (55% in Water, ca. 7.5mol/L) 2028-63-9 25mL $142 2021-12-16 Buy
Usbiological 424753 3-Butyn-2-ol 2028-63-9 1g $326 2026-06-03 Buy
Usbiological 424753 3-Butyn-2-ol 2028-63-9 5g $410 2026-06-03 Buy
Product number Packaging Price Buy
447986 25ml $233 Buy
447986 100ml $292 Buy
B0750 25mL $142 Buy
424753 1g $326 Buy
424753 5g $410 Buy

3-Butyn-2-ol Chemical Properties,Uses,Production

Synthesis

The ketone (5.00 mmol) was dissolved in 50 mL of THF in a 50 mL round-bottom flask. The mixture was cooled to -78°C. At -78°C, magnesium acetylenyl chloride (5.5 mL, 5.5 mmol, 0.6 M toluene solution) was added dropwise to the mixture. The mixture was transferred to 0°C. The mixture was stirred for 1.5 hours. A saturated aqueous solution of NH4Cl (10 mL) was added to the mixture. The entire mixture was extracted with EtOAc (20 mL × 3). The combined organic layers were washed with brine (10 mL). The combined organic layers were dried with Na2SO4. The combined organic layers were filtered. The combined organic layers were concentrated under vacuum. The residue was purified by silica gel column chromatography using petroleum ether and ethyl acetate as eluents to give 3-butyn-2-ol.


Synthetic Route of 3-Butyn-2-ol

Figure 3. Synthetic Route of Butyn-2-ol

Chemical Properties

clear colorless to light yellow liquid

Uses

3-Butyn-2-ol is an intermediate used to prepare aminoindanes with inhibitory activity toward acetylcholine esterase and monoamine oxidase useful as anti-Alzheimer's agents.

Flammability and Explosibility

Flammable

Global( 236)Suppliers
Supplier Tel Email Country ProdList Advantage
SHANGHAI BANGCHENG CHEMICAL Co.,Ltd. 021-69106960 13701823997 13701823733@163.com China 4634 60
Apeloa Pharmaceutical Co., Ltd. +86-0571-87635730 +86-13588737631 inquiry@hengdian-group.com China 178 58
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Alfa Aesar 400-6106006 saleschina@alfa-asia.com China 30103 84
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Shijiazhuang Sdyano Fine Chemical Co., Ltd. 0311-89250318 13582355795 master@sjzsdyn.com China 2776 65
JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078 sales@jingyan-chemical.com China 9963 60
Jia Xing Isenchem Co.,Ltd 0573-85285100 18627885956 isenchem@163.com China 9389 66
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64

View Lastest Price from 3-Butyn-2-ol manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3-Butyn-2-ol pictures 2020-01-09 3-Butyn-2-ol
2028-63-9
$9.80 1g ≥99% 100kg Career Henan Chemical Co
1-Ethynylethanol 1-Methyl-2-propynyl alcohol 1-Methylpropargyl alcohol 3-butyn-2-0l 3-butyn-2-olsolution 3-Hydroxy-1-butyne alpha-Methylpropargyl alcohol HCequivCCH(CH3)OH (R)-3-BUTYNE-2-OL (R)-(+)-1-BUTYN-3-OL 3-ButyN-2-ol 1-Butyn-3-ol (55% in water) 3-Bytyn-2-ol 3-BUTYN-2-OL 98% 3-BUTYN-2-OL SOLUTION, ~55% IN WATER 3-BUTYNE-2-OL 99% 3-BUTYN-2-OL (55% SOLUTION IN WATER) ABOUT 55% 3-Butyne-2-Ol98% 3-BUTYN-2-OL, 50% AQUEOUS SOLUTION But-3-Yn-2-olTetrahydroquinoline 3-Butyn-2-ol (55% in Water, ca. 7.5mol/L) 3-Butyn-2-ol,97% 3-BUTYNE-2-OL (BO) Butane-3-yne-2-ol α-Methylpropargyl alcohol 3-Butyn-2-ol 3-Butyn-2-ol ,98% 3-Hydroxybut-1-yne 3- Butyn - 2- Ol Solution 55% 3-Butyn-2-ol, 97% 10GR 3-Butyn-2-ol, 97% 50GR 1-Butyn-3-ol Ethynylmethylcarbinol (2R)-3-butyn-2-ol (+/-)-3-BUTYN-2-OL, 98%(+/-)-3-BUTYN-2-OL, 98%(+/-)-3-BUTYN-2-OL, 98% 3-Butyn-2-ol > 3-Butyn-2-ol (55% in Water) TIANFU-CHEM - 3-Butyn-2-ol but-3-yn-2-ol Butynol 2028-63-9 CH3CHOHC8801CH HCCCHOHCH3 Alcohols Asymmetric Synthesis Chiral Building Blocks Organic Building Blocks Alkynes Organic Building Blocks Terminal Aliphatics Acetylenes Acetylenic Alcohols & Their Derivatives bc0001