Name | Sodium di-n-butyldithiocarbamate |
Synonyms | SDBC TEPIDON acceltp butylnamate Accelerant TP Sodiumbutyldithiocarbamate SODIUM DIBUTYLDITHIOCARBAMATE sodium dibutylcarbamodithioate Sodium di-n-butyldithiocarbamate SODIUM DI-N-BUTYLDITHIOCARBAMATE sodium,N,N-dibutylcarbamodithioate Dibutylcarbamodithioic Acid Sodium Salt Carbamodithioicacid,dibutyl-,sodiumsalt |
CAS | 136-30-1 |
EINECS | 205-238-0 |
InChI | InChI=1/C9H19NS2.Na/c1-3-5-7-10(9(11)12)8-6-4-2;/h3-8H2,1-2H3,(H,11,12);/q;+1/p-1 |
Molecular Formula | C9H18NNaS2 |
Molar Mass | 227.37 |
Density | 1,09 g/cm3 |
Boling Point | 257.7°C at 760 mmHg |
Flash Point | 109.6°C |
Vapor Presure | 0.0144mmHg at 25°C |
Specific Gravity | 1.09 |
Sensitive | 4: no reaction with water under neutral conditions |
Use | Natural rubber, styrene-butadiene rubber, chloroprene rubber and latex with super accelerator, mainly used for rubber dairy products |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R50 - Very Toxic to aquatic organisms R34 - Causes burns R24 - Toxic in contact with skin R22 - Harmful if swallowed |
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. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
TSCA | Yes |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Overview | Sodium diethyldithiocarbamate also known as accelerator SDC, white to light yellow crystalline powder. Soluble in water and ethanol, slightly soluble in benzene and chloroform. Hygroscopic. Used as natural rubber, Styrene Butadiene Rubber, Nitrile Rubber, chloroprene rubber accelerator. When used in combination with diethylammonium diethyldithiocarbamate, it can be vulcanized at room temperature. From diethylamine and carbon disulfide condensation. The aqueous solution was alkaline and gradually decomposed. In the case of acid can separate out carbon disulfide and make the solution turbid. It is a specific reagent for the determination of copper ions. |
purification method | a purification method of Sodium diethyldithiocarbamate, the specific preparation steps are as follows:(1) in a 5000ml glass flask (or beaker), add 1500ml of analytically pure anhydrous ethanol, turn on stirring and heating, add 2kg of industrial Sodium diethyldithiocarbamate in batches, and dissolve at a controlled temperature of 50-60 ℃;(2) after fully soluble injection of activated carbon (767 type injection of activated carbon), the amount of 1 ~, heat preservation 30 minutes, filtration, room temperature cooling 12 hours crystallization, separation of crystallization, it is obtained by air-drying at room temperature (25 ° C. To 30 ° C.) in the dark. According to HG/T4016-2008 detection, the content can reach more than 99.5%, refining yield of 83%. Other items met the criteria. |
Chemical properties | Sodium diethyldithiocarbamate is also called rubber accelerator TP and accelerator TP, it is orange-yellow to orange-red viscous transparent liquid at room temperature. The molecular weight is 227, the relative density is 1.075~1.14, the content is more than 40%, the free alkali (NaOH) is less than 1.3%, the oily substance is less than 1%, and it is miscible with water and alcohol, insoluble in hydrocarbon and chlorinated hydrocarbon solvents. This product is non-toxic, can not be stored in iron containers. Accelerator TP is a super accelerator for natural rubber, styrene-butadiene rubber, chloroprene rubber and latex thereof. It is mainly used for rubber dairy products, thin-walled impregnated products, medical supplies, balloons, self-sulfur mucilages and adhesives. The vulcanization speed is slower than that of dithiocarbamate, and the scorch time is longer. In order to improve the vulcanization speed of the latex compound, it is used in combination with the accelerator zinc dithiocarbamate insoluble in water or TMTM and TMTD, and the obtained product has high strength and good aging resistance. When using this product need to use zinc oxide activation, but do not need to add fatty acids. If the vulcanization speed is too high, it can be suppressed by the antioxidant MB or the scorch retarder. This product has an activating effect on thiazole accelerators. In general, the amount of sulfur used in the latex compound is 0.5 to 2 parts, and the amount of sulfur used is 2 to 1 part. foreign production plants of Sodium diethyldithiocarbamate mainly include Du Pont company in the United States, Anchor company and Rohinson company in the United Kingdom, Prchim company in France, and sumitfully chemical company in Japan, bozzeto, Italy. |
rubber accelerator | rubber accelerator TP is commonly used in the field of plastic rubber additives in China as an overspeed vulcanization accelerator, suitable for natural rubber, laTeX of isoprene rubber, cis-Polybutadiene Rubber, styrene-butadiene rubber and nitrile rubber. Compared with the Sodium diethyldithiocarbamate, the accelerating effect is higher, and the vulcanization can be carried out at normal temperature. The vulcanization flatness is also good. The vulcanized rubber is soft and transparent, and has good physical properties. This product can be used with thiuram, thiazole and guanidine accelerator. When used as the second accelerator of the thiazole type, the blending amount thereof is smaller than that of the accelerators TMTD and PZ. This product is slightly polluting, mainly used in the manufacture of sponge rubber, steam balls, gloves, mucilage and general rubber dairy products. |
preparation method | Sodium diethyldithiocarbamate is prepared by reacting di-n-butylamine and carbon disulfide in the presence of sodium hydroxide. |
purpose | is a super accelerator for natural rubber, styrene-butadiene rubber, chloroprene rubber and latex, mainly used for LaTeX |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |