isibhengezo_sekhasi

umkhiqizo

2 4-Dichloro-3-Methylbenzoic acid (CAS# 83277-23-0)

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C8H6Cl2O2
I-Molar Mass 205.04
Ukuminyana 1.442±0.06 g/cm3(Kubikezelwe)
I-Boling Point 320.9±37.0 °C(Kubikezelwe)
pKa 2.78±0.28(Okubikezelwe)
Isimo Sesitoreji Kuvalwe endaweni eyomile, Ngezinga lokushisa Legumbi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

 

Isingeniso

I-3-Methyl-2,4-dichlorobenzoic acid iyinhlanganisela yezinto eziphilayo. Okulandelayo yisingeniso sobunjalo bayo, ukusetshenziswa, indlela yokulungiselela kanye nolwazi lokuphepha:

 

Ikhwalithi:

- Ukubukeka: Okuqinile kwecrystalline engenambala

- Ukunyibilika: kuncibilika kuzincibilikisi eziphilayo njenge-ethanol, i-ether ne-methylene chloride, engancibiliki emanzini.

 

Sebenzisa:

- Izibulala-zinambuzane: I-3-methyl-2,4-dichlorobenzoic acid iyisibulala-zinambuzane esibanzi esingasetshenziswa ukulawula ukukhula kokhula oluhlukahlukene, njengotshani obuzungeze izitshalo ezifana ne-kale, legumes, kanye nommbila.

 

Indlela:

I-3-Methyl-2,4-dichlorobenzoic acid ingalungiswa nge-chlorination ye-p-methylanise ether (3-methylanisole). Indlela ethile yokulungiselela ingabandakanya lezi zinyathelo ezilandelayo:

Chaza i-3-methylanisole ku-anhydrous hydrochloric acid.

I-sodium chlorite (NaClO) noma i-potassium chlorite (KClO) yengezwe njengemithombo ye-chlorine.

Ingxube yokusabela inyakaziswa emazingeni okushisa aphansi, ngokuvamile phakathi kuka-0-5 °C.

Ngemva kokuqedwa kokusabela, ingxube iyahlungwa noma ikhishwe ukuze kutholwe umkhiqizo we-3-methyl-2,4-dichlorobenzoic acid.

 

Ulwazi Lokuphepha:

- I-3-Methyl-2,4-dichlorobenzoic acid ingase ibangele ukulimala emvelweni, futhi kufanele kuqashelwe ukulawula ukusetshenziswa nokulahlwa kwemfucuza.

- Ukuthintana ngqo nomuthi kungase kucasule isikhumba, amehlo, nohlelo lokuphefumula, futhi ukuthintana ngqo kufanele kugwenywe.

- Gqoka okokuvikela okufanele njengamagilavu, izibuko, namamaski lapho usetshenziswa.

- Kufanele kuqashelwe ukuvimbela ukuxubana namanye amakhemikhali ngesikhathi sokugcinwa nokuphathwa, futhi ugweme ukuthungela kanye nokushisa okuphezulu.

- Sicela ufunde futhi ulandele amashidi edatha okuphepha afanele nemihlahlandlela yokusebenza ngaphambi kokuwasebenzisa.


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