Molecular Formula | C4H10N2O3S2 |
Molar Mass | 198.26 |
Density | 1.61±0.1 g/cm3(Predicted) |
Melting Point | 240 °C |
Boling Point | 276.6℃ at 101.325kPa |
Solubility | water: soluble25mg/mL, clear, colorless |
Appearance | Solid:particulate/powder |
Color | White to Almost white |
pKa | 1.54±0.50(Predicted) |
Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
Refractive Index | 1.623 |
Risk Codes | R34 - Causes burns R42 - May cause sensitization by inhalation R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S24 - Avoid contact with skin. S22 - Do not breathe dust. |
UN IDs | UN 3261 8/PG 2 |
WGK Germany | 3 |
HS Code | 29309090 |
Hazard Class | 8 |
Packing Group | III |
LogP | -2 |
surface tension | 72.9mN/m at 1g/L and 20.2 ℃ |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
preparation | (1) mixing 42.04g of cyanamide crystals and 57.5ml of glacial acetic acid;(2) at -5°C, methyl mercaptan gas is introduced into the mixed solution of cyanamide and acetic acid and reacted for 5 hours;(3) Substitution Add 196g of 50% sulfuric acid solution to the solution obtained in step (2), and the temperature rises to 20°C, stirring reaction to obtain a solution of S-methyl isothiourea sulfate and acetic acid;(4) After treatment, the solution obtained in step (3) is cooled to 0°C for crystallization, filtered, and the filter cake is washed with 20ml of methanol and dried to obtain 99.27g of S-methyl isothiourea sulfate, the content is 99.1%, the yield is 78.7%, and the filtrate treatment is applied. |
use | as an intermediate of electroplating additives, used to prepare brightener for copper plating, and also used for electroplating of other precious metals when used in acid copper plating with polyvinyl alcohol or nonionic surfactant, bright and malleable copper plating layer can be obtained, and it can also be used in other acid electroplating solutions, such as acid silver plating and palladium plating. |