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| CAS No.: | 76-09-5 |
|---|---|
| Name: | Pinacol |
| Molecular Structure: | |
|
|
|
| Formula: | C6H14O2 |
| Molecular Weight: | 118.176 |
| 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-; |
| EINECS: | 200-933-5 |
| Density: | 0.963 g/cm 3 |
| Melting Point: | 40-43 °C(lit.) |
| Boiling Point: | 174.4 °C at 760 mmHg |
| Flash Point: | 77.2 °C |
| Solubility: | Soluble in hot water, alcohol, and diethyl ether. |
| Appearance: | white solid |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 38-36/37/38 |
| Safety: | 37-37/39-26 |
| Transport Information: | UN 1325 4.1/PG 2 |
| PSA: | 40.46000 |
| LogP: | 0.52820 |
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- 97730-31-9(S)-4'-(2-Methylbutyl)Biphenyl-4-Carbonitrile
- 5076-20-0
2,3-dimethyl-2,3-epoxybutane
A
- 75-97-8
3,3-dimethyl-butan-2-one
B
- 76-09-5
2,3-dimethyl-2,3-butane diol
C
- 10473-13-9
2,3-dimethyl-1-buten-3-ol
| Conditions | Yield |
|---|---|
| With perchloric acid; sodium perchlorate at 25℃; Yields of byproduct given; | A n/a B 99.93% C n/a |
| With perchloric acid; sodium perchlorate at 25℃; Product distribution; heterogeneous reaction; |
| Conditions | Yield |
|---|---|
| With methanol; gallium nitride at 20℃; for 12h; Irradiation; Sealed tube; | 99% |
| With potassium bromate; hydrogenchloride; mercury(II) diacetate at 35℃; for 0.666667h; Equilibrium constant; | |
| durch elektrolytische Reduktion; |
| Conditions | Yield |
|---|---|
| In ethanol for 0.166667h; Heating; Yields of byproduct given; | A n/a B 99% |
| Conditions | Yield |
|---|---|
| In ethanol for 0.25h; Heating; Yields of byproduct given; | A n/a B 99% |
- 13257-51-7
mercury(II) trifluoroacetate
A
- 76-09-5
2,3-dimethyl-2,3-butane diol
| Conditions | Yield |
|---|---|
| In ethanol for 0.25h; Heating; Yields of byproduct given; | A n/a B 99% |
| Conditions | Yield |
|---|---|
| With K2; (DHQD)2 quinuclidine; potassium hexacyanoferrate(III) In water; tert-butyl alcohol at 25℃; for 5h; pH=12; Oxidation; | 98% |
| With 1,4-diaza-bicyclo[2.2.2]octane; K2; oxygen In water; tert-butyl alcohol at 50℃; under 750.075 Torr; for 18h; pH=12.0; | 94% |
| With Nafion NR50; dihydrogen peroxide at 70℃; for 20h; | 86% |
| Conditions | Yield |
|---|---|
| In ethanol for 0.166667h; Heating; Yields of byproduct given; | A n/a B 97% |
- 19424-29-4
4,4,5,5-tetramethyl-1,3-dioxolan-2-one
A
- 67-56-1
methanol
B
- 76-09-5
2,3-dimethyl-2,3-butane diol
| Conditions | Yield |
|---|---|
| With [carbonylchlorohydrido{bis[2-(diphenylphosphinomethyl)ethyl]amino}ethylamino] ruthenium(II); potassium tert-butylate; hydrogen In tetrahydrofuran at 140℃; for 20h; Autoclave; | A 95 %Chromat. B 96% |
| With (bis[(2-diisopropylphosphino)ethyl]amine)Mn(CO)2Br; hydrogen; sodium t-butanolate In tetrahydrofuran at 120℃; under 22502.3 Torr; for 26h; Schlenk technique; Glovebox; Autoclave; | A 66% B 76% |
| With potassium phosphate; C62H63N5OPRu(1+)*Cl(1-); hydrogen In tetrahydrofuran at 140℃; under 38002.6 Torr; for 24h; Glovebox; Autoclave; | A 93 %Chromat. B 99 %Chromat. |
| Conditions | Yield |
|---|---|
| In ethanol for 0.25h; Heating; Yields of byproduct given; | A n/a B 95% |
| Conditions | Yield |
|---|---|
| With C34H32N4O2RuSe4 In 1,1,1,3',3',3'-hexafluoro-propanol at 23℃; for 4h; Inert atmosphere; | A 94% B n/a |
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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:
Xi
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.
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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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