NICKEL DI-N-BUTYLDITHIOCARBAMATE
Nickel dibutyl dithiocarbamate
CAS: 13927-77-0
Molecular Formula: C18H36N2NiS4
NICKEL DI-N-BUTYLDITHIOCARBAMATE - Names and Identifiers
NICKEL DI-N-BUTYLDITHIOCARBAMATE - Physico-chemical Properties
| Molecular Formula | C18H36N2NiS4 |
| Molar Mass | 467.45 |
| Density | 1,26 g/cm3 |
| Melting Point | 86°C |
| Boling Point | 450.81°C (estimate) |
| Flash Point | 260°C |
| Water Solubility | 8.93μg/L at 20℃ |
| Solubility | Practically insoluble in water |
| Vapor Presure | 0.081Pa at 25℃ |
| Appearance | powder to crystal |
| Specific Gravity | 1.26 |
| Color | Green crystals from C6H6/EtOH |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| Sensitive | 4: no reaction with water under neutral conditions |
| MDL | MFCD00067273 |
| Physical and Chemical Properties | Green powder. The melting point of 86 degrees Celsius, the relative density of 1.26, flash point 263. Soluble in chloroform, benzene, carbon disulfide, acetone-soluble, ethanol, insoluble in water. Storage stability. |
| Use | Can be used as a light stabilizer for polypropylene, and is widely used as an antiozonant and a light stabilizer for synthetic rubber |
NICKEL DI-N-BUTYLDITHIOCARBAMATE - Risk and Safety
| RTECS | QR6140000 |
| TSCA | Yes |
| Toxicity | LD50 orl-rat: 17 g/kg IPSTB3 3,93,76 |
NICKEL DI-N-BUTYLDITHIOCARBAMATE - Reference Information
| LogP | 5.44 at 25℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | NDBC is a dark green powder with a density of 1.26 g/cm, a melting point above 86 ℃, a flash point of 263 ℃, soluble in chloroform, benzene, carbon disulfide, slightly soluble in acetone, and insoluble in water. Good stability during storage. NDBC is toxic and irritating to the skin. Steam and dust inhalation are harmful to the human body. |
| application | rubber antioxidant nickel dibutyldithiocarbamate (NDBC) is mainly used in synthetic rubber such as styrene-butadiene, chloroprene, chlorosulfonated polyethylene, etc., which can prevent rubber from cracking caused by sunlight and ozone and improve the heat resistance of chloroprene rubber and chlorosulfonated polyethylene. |
| prepare | nickel dibutyldithiocarbamate pre-dispersed parent rubber particles. in parts by weight, the composition of the parent rubber particles is: 73 parts of nickel dibutyldithiocarbamate, 6 parts of chlorohydrin rubber, 3 parts of EVA resin, 1 part of stearic acid, 2 parts of higher fatty acid, 2 parts of pentaerythritol stearate, 2 parts of microcrystalline paraffin, 3 parts of zinc saturated fatty acid and 8 parts of naphthenic. The preparation method of the parent rubber particle includes the following steps:(1) accurately weigh the raw materials required for preparing the parent rubber particle according to the ratio, wherein the rubber carrier is pre-made into a sheet;(2) dibutyl dithiocarbamate Nickel, rubber carrier, higher fatty acid, saturated fatty acid zinc and naphthane oil are fully mixed to obtain the first premix;(3) Mix pentaerythritol stearate and microcrystalline paraffin evenly and put into step (2) In the first premix obtained, fully stir to obtain the second premix, put the second premix into the internal mixer three times, and mix for 8 minutes at a temperature of 80 ℃ and a rotating speed of 70rpm to obtain the rubber compound;(4) Put the rubber obtained in step (3) into the extruder, control the given rotating speed of the main machine to be 125r /min, and the temperature control area of the extruder is divided into seven sections from the feed port to the discharge port in sequence, of which the temperature of the first section is 48 ℃, the temperature of the second stage to the seventh stage is 75 ℃, and finally after being filtered by an 80-mesh filter, it is extruded and sliced to obtain nickel dibutyldithiocarbamate pre-dispersed masterrubber particles. |
| use | this product has very good light stabilization effect and is used in polypropylene fiber, film and narrow band in 0.3-0.5 parts. In styrene-butadiene, chloroprene, chlorosulfonated polyethylene and other synthetic rubber has the effect of preventing sunlight cracking and ozone cracking, and can improve the heat resistance of chloroprene rubber and chlorosulfonate polyethylene. It can be used as a light stabilizer for polypropylene, and is widely used as an anti-ozone agent and light stabilizer for synthetic rubber |
| production method | dibutylamine, carbon disulfide and caustic soda react at a ratio of 1.02:1:1(mol) to save into dibutyldithiocarbamate sodium solution at 25-30 ℃. nickel chloride solution with a concentration of 40-50% is added to this solution, and metathesis reaction is carried out at 20-30 ℃. the generated precipitate is washed, dried and crushed to obtain light stabilizer NBC. |
| category | toxic substances |
| toxicity classification | low toxicity |
| acute toxicity | oral-rat LD50: 17000 mg/kg |
| flammability hazard characteristics | flammability; heating produces toxic nitrogen oxides, sulfur oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
| occupational standard | TWA 1 mg (nickel)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:47
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