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Cas Database |
- Name Ethyl bromopyruvate
- EINECS200-729-6
- CAS No. 70-23-5
- Density1.561 g/cm3
- PSA43.37000
- LogP0.51350
- SolubilityN/A
- Melting Point79 - 82oC
- FormulaC5H7BrO3
- Boiling Point224.3 °C at 760 mmHg
- Molecular Weight195.013
- Flash Point75.4°C
- Transport InformationUN 3265
- AppearanceClear yellow to pink-red liquid
- Safety26-36-24/25
- Risk Codes36/37/38-33-23/24
- Molecular Structure
- Hazard Symbols
Xi, 
T - SynonymsXi, T
- Article Data25
Ethyl bromopyruvate Synthetic route
| Conditions | Yield |
|---|---|
| With tetrachloromethane; bromine at 50 - 60℃; unter Durchleiten von trockener Luft und Belichtung; | |
| With bromine at 50 - 60℃; | |
| With bromine at 65℃; unter Durchleiten von CO2; |
- 56-23-5
tetrachloromethane
- 128-08-5
N-Bromosuccinimide
- 97-64-3, 2676-33-7
ethyl 2-hydroxypropionate
A
- 617-35-6
2-oxo-propionic acid ethyl ester
B
- 70-23-5
ethyl Bromopyruvate
| Conditions | Yield |
|---|---|
| With tetrachloromethane; N-Bromosuccinimide |
| Conditions | Yield |
|---|---|
| With diethyl ether; hydrogen bromide |
- 56-23-5
tetrachloromethane
- 128-08-5
N-Bromosuccinimide
- 97-64-3, 2676-33-7
ethyl 2-hydroxypropionate
A
- 617-35-6
2-oxo-propionic acid ethyl ester
B
- 70-23-5
ethyl Bromopyruvate
- 97-64-3, 2676-33-7
ethyl 2-hydroxypropionate
- 70-23-5
ethyl Bromopyruvate
| Conditions | Yield |
|---|---|
| Multi-step reaction with 2 steps 1: N-bromo-succinimide; calcium carbonate; tetrachloromethane 2: N-bromo-succinimide; tetrachloromethane; hydrogen bromide View Scheme |
| Conditions | Yield |
|---|---|
| hydrogenchloride In water at 30 - 40℃; for 9h; |
| Conditions | Yield |
|---|---|
| In ethanol at 70℃; for 1h; | 100% |
| In ethanol at 70℃; for 1h; Hantzsch Thiazole Synthesis; | 100% |
| at 120℃; for 0.5h; | 99.5% |
- 719-80-2
Ethyl diphenylphosphinite
- 70-23-5
ethyl Bromopyruvate
- 130742-47-1
diphenylphosphinicoenolpyruvate d'ethyle
| Conditions | Yield |
|---|---|
| Ambient temperature; | 100% |
- 70-23-5
ethyl Bromopyruvate
- 73956-15-7
2,2-diethoxythioacetamide
- 73956-16-8
ethyl 2-(diethoxymethyl)-1,3-thiazole-4-carboxylate
| Conditions | Yield |
|---|---|
| With 3 A molecular sieve In ethanol for 0.5h; Heating; | 100% |
| With 4 A molecular sieve In ethanol for 1h; Hantzsch reaction; Heating; | 100% |
| With 4 Angstroem MS In ethanol for 1h; Heating; | 100% |
Ethyl bromopyruvate Chemical Properties
Molecular structure of Propanoic acid,3-bromo-2-oxo-, ethyl ester (CAS NO.70-23-5) is:
Product Name: Propanoic acid,3-bromo-2-oxo-, ethyl ester
CAS Registry Number: 70-23-5
IUPAC Name: Ethyl 3-bromo-2-oxopropanoate
Molecular Weight: 195.01128 [g/mol]
Molecular Formula: C5H7BrO3
XLogP3-AA: 1.2
H-Bond Donor: 0
H-Bond Acceptor: 3
Refractive index: n20/D 1.469(lit.)
Storage temp.: 2-8 °C
Surface Tension: 39.5 dyne/cm
Density: 1.561 g/cm3
Flash Point: 75.4 °C
Enthalpy of Vaporization: 46.08 kJ/mol
Boiling Point: 224.3 °C at 760 mmHg
Vapour Pressure: 0.0919 mmHg at 25°C
EINECS: 200-729-6
Product Categories: Aromatic Esters;Aliphatics;Esters;C2 to C5;Carbonyl Compounds
Ethyl bromopyruvate Safety Profile
Safty information about Propanoic acid,3-bromo-2-oxo-, ethyl ester (CAS NO.70-23-5) is:
Hazard Codes: 
Xi; 
T
Risk Statements: 36/37/38-33-23/24
R36/37/38:Irritating to eyes, respiratory system and skin.
R33:Danger of cumulative effects.
R23/24:Toxic by inhalation, in contact with skin.
Safety Statements: 26-36-24/25
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
S24/25:Avoid contact with skin and eyes.
RIDADR: 3265
WGK Germany: 3
F: 8-9-21
Hazard Note: Irritant
HazardClass: 8
PackingGroup: II
HS Code: 29183000
Ethyl bromopyruvate Specification
Propanoic acid,3-bromo-2-oxo-, ethyl ester , its cas register number is 70-23-5. It also can be called Ethyl 3-bromopyruvate ; Ethyl bromopyruvate ; beta-Bromopyruvic acid ethyl ester .It is a clear yellow to pink-red liquid with strong offensive odor.
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