xov xwm

Greyish dawb mus rau reddish siv lead ua los yog pulp. Sodium m-aminobenzene sulfonate tau txais los ntawm sulfonation cov tshuaj tiv thaiv ntawm nitrobenzene thiab txo. Siv rau kev tsim cov azo dyes thiab tshuaj intermediates, reactive, acidic, sulfide thiab lwm yam dyes.

METANILIC ACIDSODIUM ntsev

英文名 词: m-aminobenzenesulfonic ACID SODIUM SALT; SODIUM METANILATE.

CAS nr. : 1126-34-7

EINECS No.: 214-419-3 [1]

Cov mis mos molecular: C6H6NNaO3S

Molecular Luj: 195.1734

Cov tsos mob: Greyish dawb mus rau lub teeb liab siv lead ua los yog slurry

Dawb zoo siv lead ua. Lub decomposition kub ntawm crystal tau los ntawm dej yog 302 ~ 304 ℃.

Metanilic acidmuaj greyish dawb mus rau lub teeb liab zoo li crystalline los yog slurry

Tag nrho cov ntsiab lus amino, % ≥60

Cov ntsiab lus, % ≥90

Cov ntsiab lus ntawm insoluble teeb meem hauv dej qab zib, % ≤1.5

Siv: siv nyob rau hauv kev tsim cov azo dyes thiab tshuaj intermediates, reactive, acid, sulfide thiab lwm yam dyes.

Cov txheej txheem ntau lawm: sulfonation cov tshuaj tiv thaiv ntawm nitrobenzene thiab fuming sulfuric acid yog nqa tawm ntawm 115 ℃, thiab cov tshuaj tiv thaiv cov khoom yog neutralized rau nruab nrab los ntawm cov kua alkali, thiab ces cov sodium tov ntawm m-nitrobenzene sulfonate yog lim. Cov tshuaj raug txo nrog hlau shavings raws li catalyst kom tau m-aminobenzene sulfonate, thiab cov av nkos hlau raug tshem tawm los ntawm kev pom. Cov filtrate yog m-aminobenzene sulfonate ntsev tov. Ntxiv sulfuric acid rau hauv lub lauj kaub kua qaub kom txog rau thaum Congo liab daim ntawv xeem hloov xiav, thiab ua kom kub ntawm 70 ℃. Tom qab ntawd, m-aminobenzene sulfonate slurry yog tau los ntawm centrifugation pom.

Toxicity thiab kev tiv thaiv: cov khoom no yog tshuaj lom heev. Kev nqos los yog nqus los ntawm daim tawv nqaij tuaj yeem ua rau muaj mob hnyav heev. Txawm li cas los xij, nws cov tshuaj toxicity tsawg dua li aniline, thiab yuav tsis ua rau cov nyhuv carcinogenic. Thaum lub sij hawm tsim khoom, nws yuav tsum nruj me ntsis txwv tsis pub hnav los yog txaws ntawm daim tawv nqaij, cov khoom siv ntau lawm yuav tsum tau muab kaw kom tiv thaiv kom tsis txhob xau, thiab tus neeg teb xov tooj yuav tsum hnav cov khoom tiv thaiv.

Ntim thiab khaws cia: khaws cia hauv qhov txias, qhov cua thiab qhov chaw qhuav, tiv thaiv tshav kub, noo noo thiab hnub ci. Khaws thiab thauj khoom raws li cov cai ntawm cov tshuaj lom.