Molecular Formula | C14H8N2S4Zn |
Molar Mass | 397.88 |
Density | 1.7 g/cm3(Temp: 25 °C) |
Melting Point | 330 °C |
Water Solubility | 20.6mg/L at 20℃ |
Solubility | Acidic Methanol (Slightly, Heated) |
Appearance | Solid |
Color | White to Off-White |
pKa | 7.03[at 20 ℃] |
Storage Condition | Refrigerator |
Use | Used as natural rubber, General synthetic rubber and latex accelerator |
RTECS | DL7000000 |
Toxicity | LD50 oral in rat: 540mg/kg |
LogP | 2.42 at 20℃ |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | accelerator ZMBT can be used as an accelerator for vulcanization of natural rubber, general synthetic rubber and latex. its properties are similar to accelerator m, but its promotion effect is slightly weak. 2-thiol benzothiazole zinc salt has the characteristics of fast vulcanization promotion, low vulcanization flatness and no early vulcanization during mixing. It is widely used in rubber processing industry and is an essential high-efficiency rubber vulcanization accelerator for natural rubber and synthetic rubber. High-speed vulcanization accelerator, does not have rubber dyeing property. Suitable for NR, IR, BR, SBR, NBR, EPDM and latex. When used in dry rubber, it has the same performance as WILLING MBT and low scorching property. Used in latex systems with mild activity and usually combined with superaccelerators. The critical temperature of vulcanization is relatively high (138 ℃). It is not easy to produce early vulcanization, and the vulcanization flatness is wide. It is suitable for latex system and has the function of adjusting the viscosity of the system. Suitable for injection molding and foaming rubber products. Safe operation, easy to disperse, no pollution, no discoloration. Aging resistance when combined with TP. Mainly used in the manufacture of tires, hoses, rubber shoes, tape and other general industrial products. Used as natural rubber, general synthetic rubber and latex accelerator |
preparation | add 30mL methanol into the electrolytic cell, add 0.5g of 2-mercaptobenzothiazole with purity of 98%, add 0.1g of conductive agent tetrabutylammonium bromide, fully stir and dissolve under 35 ℃ water bath heating condition, the stirring speed of the electrolytic cell is 200 r/min minutes, the anode is metal zinc sheet, and the cathode is graphite, the direct current is applied to the reaction and the current during the reaction is adjusted to 60mA. TLC to track the reaction process, electrolytic reaction to the electrolytic cell 2-mercaptobenzothiazole disappeared, suspension. Filtration, the resulting filtrate returned to the electrolytic cell for further use, the filter cake was washed with methanol (5 mLx3) and dried to obtain the solid product 2-mercaptobenzothiazole zinc salt with 99.3% yield. X-ray powder diffraction of the samples showed that the crystal plane spacing d = 1.32999,0.96207,0.89702,0.73719,0.65067,0.56519nm belonged to the characteristic peak of bis-2-mercaptobenzothiazole zinc. |
category | toxic substances |
toxicity classification | highly toxic |
acute toxicity | oral administration-rat LD50: 540 mg/kg; Abdominal cavity-mouse LD50: 200 mg/kg |
flammability hazard characteristics | combustible; combustion produces toxic nitrogen oxides, sulfur oxides and zinc oxide smoke |
storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials |
fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |