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umkhiqizo

I-Dimethyl disulfide (CAS#624-92-0)

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C2H6S2
I-Molar Mass 94.2
Ukuminyana 1.0625
I-Melting Point -85 °C
I-Boling Point 109°C(lit.)
I-Flash Point 76°F
Inombolo ye-JECFA 564
Ukuncibilika kwamanzi <0.1 g/100 mL ku-20 ºC
Ukuncibilika 2.7g/l
I-Vapor Presure 22 mm Hg ( 20 °C)
I-Vapor Density 3.24 (vs air)
Ukubukeka Uketshezi
I-Gravity ethize 1.0647 (20/4℃)
Umbala Okuphuzi okucacile
Umkhawulo Wokuchayeka ACGIH: TWA 0.5 ppm (Isikhumba)
I-BRN 1730824
Isimo Sesitoreji Indawo evuthayo
Ukuzinza Izinzile. Akuhambisani nezisekelo eziqinile, ama-oxidizing agents aqinile, ama-ejenti anciphisa amandla. Okuvutha umlilo.
Umkhawulo Oqhumayo 1.1-16.1%(V)
I-Refractive Index n20/D 1.525(lit.)
Izakhiwo Zomzimba Nezamakhemikhali Uketshezi olukhanyayo oluphuzi olukhanyayo. Kukhona iphunga elibi.
indawo yokuncibilika -85 ℃
iphoyinti abilayo 109.7 ℃
ukuminyana kwesihlobo 1.0625
inkomba ye-refractive 1.5250
Ukuncibilika okungancibiliki emanzini, okuncibilika ku-ethanol, i-ether, i-acetic acid yayixubile.
Sebenzisa Isetshenziswa njengesixazululi nesibulala-zinambuzane esiphakathi, futhi futhi iyimpahla eyinhloko ye-methanesulfonyl chloride kanye nemikhiqizo ye-methanesulfonic acid.

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Amakhodi Engozi I-R11 – Ivutha Kakhulu
U-R20/22 – Kuyingozi ngokuhogela umoya futhi uma ugwinyiwe.
R36 – Ukucasuka emehlweni
R51/53 – Ukuba nobuthi ezintweni eziphila emanzini, kungabangela imiphumela emibi yesikhathi eside endaweni yasemanzini.
R36/37/38 – Ukucasula amehlo, uhlelo lokuphefumula kanye nesikhumba.
R26 – Kunobuthi Kakhulu ngokuhogela
I-R22 – Iyingozi uma igwinywe
R36/37 – Ukucasula amehlo kanye nesistimu yokuphefumula.
Incazelo Yokuphepha S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
I-S61 - Gwema ukudedelwa endaweni. Bheka imiyalelo ekhethekile / amaphepha edatha okuphepha.
S45 – Uma kwenzeka ingozi noma uzizwa ungaphilile, funa iseluleko sezokwelapha ngokushesha (bonisa ilebula noma nini lapho kunokwenzeka.)
I-S38 – Uma kungekho kungena komoya okwanele, gqoka izinto zokuphefumula ezifanele.
S36/37/39 – Gqoka izingubo zokuzivikela ezifanele, amagilavu ​​kanye nokuvikela iso/ubuso.
I-S28A -
S16 – Zigcine kude nemithombo yokuthungela.
S60 – Le nto kanye nesiqukathi sayo kumele kulahlwe njengemfucuza eyingozi.
S57 – Sebenzisa isitsha esifanele ukugwema ukungcoliswa kwemvelo.
S39 – Gqoka ukuvikela iso / ubuso.
S29 – Ungathululi emiseleni.
Ama-ID e-UN UN 2381 3/PG 2
I-WGK Germany 2
I-RTECS JO1927500
I-TSCA Yebo
Ikhodi ye-HS 29309070
I-Hazard Class 3
Iqembu Lokupakisha II
Ubuthi I-LD50 ngomlomo kuNogwaja: 290 - 500 mg/kg

 

Isingeniso

I-Dimethyl disulfide (DMDS) iyinhlanganisela ye-organic enefomula yamakhemikhali i-C2H6S2. Iwuketshezi olungenambala olunephunga elibi elingavamile.

 

I-DMDS inokusetshenziswa okuhlukahlukene embonini. Okokuqala, kuvame ukusetshenziswa njenge-catalyst ye-sulfidation, ikakhulukazi embonini ye-petroleum ukuthuthukisa ukusebenza kahle kokucwenga nezinye izinqubo zikawoyela. Okwesibili, i-DMDS iyisibulala-sikhunta esibalulekile nesibulala-zinambuzane esingasetshenziswa kwezolimo kanye nokulima, njengokuvikela izitshalo nezimbali emagciwaneni nasezilokazaneni. Ngaphezu kwalokho, i-DMDS isetshenziswa kabanzi njenge-reagent ku-chemical synthesis kanye nokusabela kwe-organic synthesis.

 

Indlela eyinhloko yokulungisa i-DMDS iwukusabela kwe-carbon disulfide ne-methylammonium. Le nqubo ingenziwa emazingeni okushisa aphezulu, ngokuvamile edinga ukusetshenziswa kwama-catalysts ukuze kube lula ukusabela.

 

Mayelana nolwazi lokuphepha, i-DMDS iwuketshezi oluvuthayo futhi inephunga elimnandi. Izimpahla zokuzivikela ezifanele njengamagilavu, izibuko zokuphepha, nezingubo zokuzivikela kufanele zigqokwe lapho uphathwa futhi usetshenziswa. Ngesikhathi esifanayo, kufanele igcinwe kude nomlilo kanye nemithombo yokushisa ukuvimbela umlilo noma ukuqhuma. Okokugcina nokuthuthwa, i-DMDS kufanele ibekwe esitsheni esingangeni moya futhi igcinwe endaweni epholile, eyomile, enomoya omuhle, kude nama-oxidants kanye nemithombo yokuthungela. Uma kwenzeka kuvuza ngengozi, izinyathelo ezidingekayo zokususa kufanele zithathwe ngokushesha futhi kuqinisekiswe umoya ofanele.

 

 


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