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Pinacol

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Name Pinacol EINECS 200-933-5
CAS No. 76-09-5 Density 0.963 g/cm 3
Solubility Melting Point 40-43 °C(lit.)
Formula C6H14O2 Boiling Point 174.4 °C at 760 mmHg
Molecular Weight 118.20 Flash Point 77.2 °C
Transport Information UN 1325 4.1/PG 2 Appearance white solid
Safety 37-37/39-26 Risk Codes 38-36/37/38
Molecular Structure Molecular Structure of 76-09-5 (Pinacol) Hazard Symbols IrritantXi
Synonyms

1,1,2,2-Tetramethylethyleneglycol;2,3-Dihydroxy-2,3-dimethylbutane;2,3-Dimethyl-2,3-butanediol;2,3-Dimethyl-2,3-dihydroxybutane;NSC 25943;Pinacone;Tetramethylethylene glycol;2,3-Dimethyl-butane-2,3-diol;2,3-Butanediol,2,3-dimethyl-;

 

Specification

1. Introduction of Pinacol
Pinacol is a white solid organic compound. It is an alcohol that has -OH groups on adjacent carbon atoms on the same side.

2. Properties of Pinacol
The density of Pinacol(76-09-5) is 0.963 g/cm3 and it has a melting point of  40-43 °C(lit.). The boiling point is  174.4 °C at 760 mmHg. The refractive index is about  1.448. Its flash point is  77.2 °C.

3. Toxicity of Pinacol
LD50/LC50: RTECS:
CAS# 76-09-5: Draize test, rabbit, skin: 500 mg/24H Moderate;
Oral, mouse: LD50 = 3380 mg/kg;
Carcinogenicity: Pinacol - Not listed as a carcinogen by ACGIH, IARC, NTP, or CA Prop 65. 
Other: The toxicological properties have not been fully investigated. See actual entry in RTECS for complete information. 

4. Safety Information of Pinacol
Hazard Codes:IrritantXi
Risk Statements:  
R38:Irritating to skin. 
R36/37/38:Irritating to eyes, respiratory system and skin. 
Safety Statements: 
S37:Wear suitable gloves. 
S37/39:Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
RIDADR  UN: 1325 4.1/PG 2
WGK Germany: 2
RTECS  EK:1720000
F: 3

5. Preparation of Pinacol
Pinacol may be produced by the pinacol coupling reaction from acetone.

 

6. Use of Pinacol
Pinacol can be use with borane and boron trichloride to produce useful synthetic intermediate such as pinacolborane, bis(pinacolato)diboron, and pinacolchloroborane

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