Siv thiab tsim cov txheej txheem ntawm Formex
Apr 12, 2023| Sodium Dimethyl Dithiocarbamate, tseem hu ua Dibamate, nws lub npe tshuaj yog sodium dimethyl dithiocarbamate (Lus Askiv lub npe sodium dimethyl dithiocarbamate), tseem hu ua N, N-dimethylcarbamate sodium (N, N-Dimethyldithiocanbamate sodium ntsev), cov mis molecular uas muaj ob lub pob zeb muaju. yog C3H6NS2Na·2H2O.
Sodium furbane cov khoom ntshiab yog scaly dawb siv lead ua nrog me ntsis ammonia tsw thiab soluble hauv dej heev. Cov siv lead ua tau los ntawm txoj kev crystallization muaj 2.5 molecules ntawm cov dej siv lead ua. Nws poob 2 molecules ntawm cov dej siv lead ua thaum rhuab mus rau 115 degree, thiab dissolves tag nrho ntawm 130 degree. Poob dej ntawm crystallization. Cov kev lag luam nruab nrab yog 15 feem pua aqueous tov, uas yog lub teeb daj lossis cov nyom ntsuab pob tshab kua, uas ua rau muaj kev phom sij rau tib neeg lub cev yog tias nqos tau, thiab tuaj yeem ua rau lub qhov muag khaus yog tiv tauj. Feem ntau yog siv los ua fungicide, roj hmab accelerator, thiab lwm yam. Nws yog siv los ua tus terminator rau emulsion polystyrene butadiene roj hmab, nitrile roj hmab, styrene butadiene latex thiab nitrile latex. Siv ua cov tshuaj fungicides, hlau precipitants, vulcanization accelerators rau cov khoom siv roj hmab thiab tshuaj tua kab ua liaj ua teb. Nws kuj yog ib qho nruab nrab ntawm fungicides thiram, thiram hlau, thiram ammonium, thiram zinc, thiab thiram nickel.
Nws yog tau los ntawm kev ntxiv ntawm dimethylamine thiab carbon disulfide kom tau dimethylaminodithioformic acid, thiab ces salted nrog sodium hydroxide tov. Nws txoj kev npaj yog ntxiv dej rau hauv cov tshuaj tiv thaiv kettle, muab tso rau hauv lye thiab 40 feem pua dimethylamine tov nyob rau hauv nplawm, txias rau li 10 degree thiab ntxiv carbon disulfide dropwise, tswj lub dropwise cov tshuaj tiv thaiv kub tsis tshaj 30 degree, tom qab lub dropwise ntxiv ntawm carbon disulfide, Txuas ntxiv mus rau 1 mus rau 2 xuab moos, thiab tom qab ntawd cia nws sawv ntsug kom cais cov khoom seem tsis txaus kom tau txais cov tshuaj sodium thioformate.