Name | Diethyl Disulfide |
Synonyms | DETC ethyldisulphide Ethyl Disulfide Ethyldithioethane DIETHYL DISULFIDE Diethyl Disulfide DIETHYL DISULPHIDE Diethyl disulphide ethane-1,1-bis(thiolate) CUPRAL SODIUM SALT TRIHYDRATE DIETHYLCARBAMIC ACID SODIUM SALT TRIHYDRATE DIETHYLDITHIOCARBAMIC ACID TRIHYDRATE SODIUM SALT |
CAS | 110-81-6 |
EINECS | 203-805-7 |
InChI | InChI=1/C2H6S2/c1-2(3)4/h2-4H,1H3/p-2 |
Molecular Formula | C4H10S2 |
Molar Mass | 122.25 |
Density | 0.993 g/mL at 25 °C (lit.) |
Melting Point | 95-98.5°C(lit.) |
Boling Point | 151-153 °C (lit.) |
Flash Point | 104°F |
JECFA Number | 1699 |
Water Solubility | Soluble in water. |
Solubility | H2O: passes test |
Vapor Presure | 5.7 hPa (25 °C) |
Vapor Density | 5.9 (vs air) |
Appearance | liquid |
Color | Colorless to Light yellow to Light orange |
BRN | 1098273 |
Storage Condition | Store below +30°C. |
Refractive Index | n20/D 1.506(lit.) |
MDL | MFCD00009266 |
Physical and Chemical Properties | Diethyl disulfide is colorless oil, B. p.151 ~ 153 ℃,n20D 1.5060, relative density of 0.993, insoluble in water, soluble in organic solvents. |
Risk Codes | R22 - Harmful if swallowed R38 - Irritating to the skin R41 - Risk of serious damage to eyes R36/37/38 - Irritating to eyes, respiratory system and skin. R10 - Flammable |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. S37/39 - Wear suitable gloves and eye/face protection S16 - Keep away from sources of ignition. S36 - Wear suitable protective clothing. |
UN IDs | UN 1993 3/PG 3 |
WGK Germany | 3 |
RTECS | JO1925000 |
TSCA | Yes |
HS Code | 2930 90 98 |
Hazard Class | 3 |
Packing Group | III |
Toxicity | LD50 orally in Rabbit: 2030 mg/kg |
FEMA | 4093 | DIETHYL DISULFIDE |
olfactory threshold (Odor Threshold) | 0.002ppm |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Use | Diethyl disulfide is an intermediate of the fungicide ethylicin. Used as an intermediate in organic synthesis |
production method | its preparation method is to first put sodium sulfide solution in the reaction kettle, feed into sulfur powder according to sodium sulfide: sulfur = 1: 1 (molar ratio), heat up the jacket, keep the temperature for 1h when the temperature reaches 80~95 ℃ under stirring to form disodium disulfide (Na2S2) solution, then the disodium disulfide solution is pumped into the alkylation kettle, stirring is started, the vacuum valve is closed to (2~3.3)× 104Pa in the reaction kettle, the reaction temperature is controlled at 75~90 ℃, the pressure is controlled at (1.17~1.18)× 105Pa, the feeding ratio (molar ratio) is disodium disulfide: chloroethane = 1: 2, and the chloroethane is passed, cool the material to below 50 ℃, pump the material oil to the water separator to stand and delaminate, and the upper oil layer is the finished product. 2C2H5Cl Na2S S→C2H2-S-S-C2H5 2NaCl |