Kev Thiourea

Lub npe lag luam: thiourea
CAS Naj Npawb: 62-56-6
Lub cev lub cev: tsis muaj xim lossis dawb crystalline lossis crystalline hmoov
EINECS:200-543-5
Cov tshuaj formula: CH4N2S
Ntim: 25KG / hnab

Xa kev nug

Thiourea

Kegunaan thiourea yog dawb thiab ci siv lead ua, iab saj, ntom 1.41, melting point 176 ~ 178 degree, decomposition thaum kub, soluble hauv dej, soluble hauv ethanol thaum rhuab, me ntsis soluble hauv ether.

Kev tsim cov txheej txheem ntawm kegunaan thiourea:

Txoj kev npaj yog los ua cov tshuaj barium sulfide nrog sulfuric acid los yog hydrochloric acid, thiab cov roj hydrogen sulfide yog absorbed los ntawm qhov tsis zoo siab ntawm cov pob zeb tshauv emulsion kom tau txais cov tshuaj calcium hydrogen sulfide. Tom qab ntawd nws yog reacted nrog calcium cyanamide, thiab molar ratio ntawm calcium hydrogen sulfide rau calcium cyanamide yog 1:5. Nyob rau hauv tas li stirring, cov tshuaj tiv thaiv kub yog (80 ± 5) degree, thiab cov tshuaj tiv thaiv lub sij hawm yog 3 teev. Tom qab kev pom tsis zoo, cov kua thiourea tuaj yeem tsim tawm, uas tom qab ntawd evaporated, lim, txias, thiab crystallized kom tau crystalline thiourea. Cov khoom tiav yog tau los ntawm centrifugal dehydration thiab ziab. Qhov sib npaug ntawm cov tshuaj tiv thaiv yog raws li nram no: BaS + H2SO4 → BaSO4 ↓ + H2S ↑

Yam khoom	SPECIFICATION
Purity (CH4N2S)	99% min
Loss On Cua sov (H2O)	0.4% max
Tshauv	0.1% max
Dej-Insoluble Matter	0.02% max
Rhodonide (raws li CNS)	0.02% max
Melting Point	171 degree min

Kev siv hluav taws xob:

Siv nyob rau hauv kev tsim tshuaj, dyes, resins, molding hmoov, roj hmab vulcanization accelerator, hlau ntxhia flotation agents thiab lwm yam raw khoom.

Kev ntsuas hluav taws kub:

Cov khoom tsim kev puas tsuaj: nitrogen oxide, sulfur oxide.

Txoj kev tua hluav taws: siv dej, ua npuas ncauj, carbon dioxide thiab xuab zeb los tua hluav taws.

Leakage thaum muaj xwm ceev teb:

Teb thaum muaj xwm txheej ceev: cais thaj chaw muaj kab mob thiab txwv kev nkag thiab tawm. Txiav tawm qhov hluav taws kub. Nws raug pom zoo tias cov neeg ua haujlwm xwm txheej ceev yuav tsum hnav lub ntsej muag plua plav (lub ntsej muag tag nrho) thiab cov khaub ncaws ua haujlwm. Tsis txhob tuaj rau hauv kev sib cuag ncaj qha nrog cov xau.

Kev xau me me: Sau nrog rab diav huv huv hauv lub thawv qhuav, huv, thiab npog.

Cov dej xau ntau: khaws thiab rov ua dua lossis thauj mus rau qhov chaw pov tseg pov tseg.

thiourea and urea