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Cas Database |
| Name |
Potassium ethylxanthate |
EINECS | 205-439-3 |
| CAS No. | 140-89-6 | Density | 1.558 g/cm3 |
| PSA | 66.62000 | LogP | 1.50530 |
| Solubility | Soluble in water. | Melting Point |
209-214 °C |
| Formula | C3H5KOS2 | Boiling Point | 120.5 °C at 760 mmHg |
| Molecular Weight | 161.31 | Flash Point | 26.7 °C |
| Transport Information | UN 3342 | Appearance | light green solid |
| Safety | 37/39-26-37-36 | Risk Codes | 36/37/38-22 |
| Molecular Structure |
|
Hazard Symbols |
 Xn,  Xi
|
| Synonyms |
Carbonicacid, dithio-, O-ethyl ester, potassium salt (8CI);(O-Ethyl dithiocarbonato)potassium;Dithiocarbonic acid O-ethyl ester potassium salt;Ethyl potassium xanthogenate;Ethylxanthic acid potassium salt;KEX;O-Ethyldithiocarbonate potassium salt;PotassiumO-ethyl carbonodithioate;Potassium O-ethyl dithiocarbonate;Potassium xanthate;Z 3;potassium O-ethyl carbonodithioate; |
Article Data | 76 |
Potassium ethylxanthate Synthetic route
| Conditions | Yield |
|---|---|
| With potassium hydroxide In diethyl ether at 20℃; | 90% |
| With potassium hydroxide In water for 1.5h; Cooling with ice; | 90% |
| With potassium hydroxide Cooling with ice; | 71.8% |
| Conditions | Yield |
|---|---|
| With potassium hydroxide; ethanol |
- 51676-67-6
O-ethyl S-(2,4,6-trinitrophenyl) dithiocarbonate
A
- 14798-26-6
picrate anion
B
- 140-89-6
potassium ethyl xanthogenate
| Conditions | Yield |
|---|---|
| With potassium hydroxide; potassium chloride In 1,4-dioxane; water at 25℃; Kinetics; Equilibrium constant; Substitution; hydrolysis; | A 91 % Spectr. B n/a C 9 % Spectr. |
| Conditions | Yield |
|---|---|
| analoge Verbindungen ('Xanthogensaeuren') entstehen mit anderen Alkoholen oder mit Alkoholaten; |
| Conditions | Yield |
|---|---|
| Geschwindigkeit; |
Potassium ethylxanthate Chemical Properties
The Molecular Structure of Potassium ethylxanthate (CAS NO.140-89-6):
Empirical Formula: C3H5KOS2
Molecular Weight: 160.2995
IUPAC Name: potassium ethoxymethanedithioate
Appearance: Light Green Solid
Nominal Mass: 160 Da
Average Mass: 160.2995 Da
Monoisotopic Mass: 159.941887 Da
Flash Point: 26.7 °C
Enthalpy of Vaporization: 34.38 kJ/mol
Boiling Point: 120.5 °C at 760 mmHg
Vapour Pressure: 18.2 mmHg at 25°C
Stability: Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.
Product Categories: Miscellaneous Reagents;Classes of Metal Compounds;K (Potassium) Compounds (excluding simple potassium salts);Typical Metal Compounds
Synonyms: (o-ethyldithiocarbonato)potassium ; Carbonicacid,dithio-,o-ethylester,potassiumsalt ; Carbonodithioicacid,O-ethylester,potassiumsalt ; Dithiocarbonicacid,o-ethylester,potassiumsalt ; Ethylpotassiumxanthate ; Ethylpotassiumxanthogenate ; Ethylxanthatedepotassium ; Ethyl-xanthicacipotassiumsalt
Potassium ethylxanthate Toxicity Data With Reference
| 1. | orl-rat LD50:1700 mg/kg | GISAAA Gigiena i Sanitariya. 41 (6)(1976),95. | ||
| 2. | orl-mus LD50:308 mg/kg | GTPZAB Gigiena Truda i Professionalnye Zabolevaniia. Labor Hygiene and Occupational Diseases. 29 (11)(1985),51. | ||
| 3. | scu-mus LDLo:400 mg/kg | AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. 12 (1904),447. | ||
| 4. | ivn-mus LD50:199 mg/kg | AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. 135 (1962),330. |
Potassium ethylxanthate Consensus Reports
Potassium ethylxanthate (CAS NO.140-89-6) is reported in EPA TSCA Inventory.
Potassium ethylxanthate Safety Profile
Hazard Codes: 
Xn
Xi
Risk Statements: 36/37/38-22
R36/37/38: Irritating to eyes, respiratory system and skin
R22: Harmful if swallowed
Safety Statements: 37/39-26-37-36
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
S37: Wear suitable gloves
S36: Wear suitable protective clothing
RIDADR: 3342
RTECS: FG1575000
HazardClass: 4.2
PackingGroup: II
Poison by subcutaneous and intravenous routes. Moderately toxic by ingestion. Combustible when exposed to heat or flame. Moderately explosive in the form of vapor when exposed to flame. Can react with oxidizing materials. To fight fire, use water, CO2, dry chemical. Incompatible with diazonium salts. When heated to decomposition it emits highly toxic fumes of K2O and SOx.
Potassium ethylxanthate Specification
1. Fire Fighting Measures
General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam.
2. Handling and Storage
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Storage: Store in a cool, dry place. Store in a tightly closed container.
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