isibhengezo_sekhasi

umkhiqizo

I-styrene(CAS#100-42-5)

Isakhiwo Samakhemikhali:

I-Molecular Formula C8H8
I-Molar Mass 104.15
Ukuminyana 0.906 g/mL ku-25 °C
I-Melting Point -31 °C (ukukhanya)
I-Boling Point 145-146 °C (okhanyisiwe)
I-Flash Point 88°F
Ukuncibilika kwamanzi 0.3 g/L (20 ºC)
Ukuncibilika 0.24g/l
I-Vapor Presure 12.4 mm Hg ( 37.7 °C)
I-Vapor Density 3.6 (vs air)
Ukubukeka Uketshezi
I-Gravity ethize 0.909
Umbala Ezingenambala
Umkhawulo Wokuchayeka I-TLV-TWA 50 ppm (~212 mg/m3) (ACGIHand NIOSH), 100 ppm (~425 mg/m3)(OSHA ne-MSHA); uphahla 200 ppm, peak600 ppm/5 min/3 h (OSHA); I-STEL 100 ppm (~425 mg/m3) (ACGIH).
I-Merck 14,8860
I-BRN 1071236
pKa > 14 (Schwarzenbach et al., 1993)
Isimo Sesitoreji Gcina e
Ukuzinza Izinzile, kodwa ingenza i-polymerize lapho ichayeka ekukhanyeni. Ivamise ukuthunyelwa nge-dissolved inhibitor. Izinto okufanele zigwenywe zihlanganisa ama-asidi aqinile, i-aluminium chloride, ama-oxidizing agents aqinile, ithusi,
Kuyazwela Kuyazwela emoyeni
Umkhawulo Oqhumayo 1.1-8.9%(V)
I-Refractive Index n20/D 1.546(lit.)
Izakhiwo Zomzimba Nezamakhemikhali Uketshezi olunamafutha angenambala olunephunga elimnandi.
indawo yokubilisa engu-145 ℃
indawo yokubanda -30.6 ℃
ukuminyana okuhlobene 0.9059
inkomba ye-refractive 1.5467
iphoyinti elikhanyayo 31.11 ℃
ukuncibilika okungancibiliki emanzini, okuncibilika ku-ethanol ne-ether.
Sebenzisa Isetshenziswa kakhulu njenge-polystyrene, irabha yokwenziwa, amapulasitiki obunjiniyela, i-ion exchange resin nezinye izinto zokusetshenziswa.

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Amakhodi Engozi U-R10 – Uyavutha
R20 – Kuyingozi ngokuhogela umoya
R36/38 – Ukucasuka emehlweni nasesikhunjeni.
R40 – Ubufakazi obuncane bomphumela we-carcinogenic
R36/37/38 – Ukucasula amehlo, uhlelo lokuphefumula kanye nesikhumba.
R39/23/24/25 -
R23/24/25 – Kunobuthi ngokuhogela, ukuthintana nesikhumba futhi uma ugwinywe.
I-R11 – Ivutha Kakhulu
R48/20 -
R63 – Ingozi engaba khona yokulimala enganeni engakazalwa
Incazelo Yokuphepha S23 – Ungawuphefumuli umhwamuko.
S36 – Gqoka izingubo ezifanele zokuzivikela.
S26 – Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
S16 – Zigcine kude nemithombo yokuthungela.
S45 – Uma kwenzeka ingozi noma uzizwa ungaphilile, funa iseluleko sezokwelapha ngokushesha (bonisa ilebula noma nini lapho kunokwenzeka.)
I-S36/37 – Gqoka izingubo zokuzivikela ezifanele namagilavu.
I-S7 – Gcina isitsha sivalwe ngokuqinile.
S46 – Uma ugwinywe, funa iseluleko sezokwelapha ngokushesha futhi ubonise lesi sitsha noma ilebula.
Ama-ID e-UN UN 2055 3/PG 3
I-WGK Germany 2
I-RTECS I-WL3675000
I-TSCA Yebo
Ikhodi ye-HS 2902 50 00
I-Hazard Class 3
Iqembu Lokupakisha III
Ubuthi I-LD50 kumagundane (mg/kg): 660 ± 44.3 ip; 90 ± 5.2 iv

 

Isingeniso

I-styrene, iwuketshezi olungenambala olunephunga elimnandi elikhethekile. Okulandelayo yisingeniso sezakhiwo, ukusetshenziswa, izindlela zokulungiselela kanye nolwazi lokuphepha lwe-styrene:

 

Ikhwalithi:

1. Ukuminyana okulula.

2. Iyashintshashintsha ezingeni lokushisa legumbi futhi ine-flash point ephansi kanye nomkhawulo wokuqhuma.

3. Ixubene nezinhlobonhlobo zezinyibilikisi eziphilayo futhi iyinto ephilayo ebaluleke kakhulu.

 

Sebenzisa:

1. I-styrene iyinto ebalulekile yamakhemikhali eluhlaza, evame ukusetshenziswa ekuhlanganiseni inombolo enkulu yamapulasitiki, irabha yokwenziwa kanye nemicu.

2. I-styrene ingasetshenziswa ukwenza izinto zokwenziwa ezifana ne-polystyrene (PS), irabha ye-polystyrene (SBR) ne-acrylonitrile-styrene copolymer.

3. Ingase futhi isetshenziselwe ukwenza imikhiqizo yamakhemikhali efana nezinongo kanye namafutha okugcoba.

 

Indlela:

1. I-styrene ingatholakala nge-dehydrogenation ngokushisa nokucindezela ama-molecule e-ethylene.

2. I-styrene ne-hydrogen nazo zingatholakala ngokufudumeza nokuqhekeka i-ethylbenzene.

 

Ulwazi Lokuphepha:

1. I-styrene iyavutha futhi kufanele ivikelwe ekushiseni nasekushiseni okuphezulu.

2. Ukuthinta isikhumba kungase kubangele ukucasuka nokungezwani komzimba, futhi kufanele kuthathwe izinyathelo ezifanele zokuzivikela.

3. Ukuchayeka isikhathi eside noma okukhulu kungase kube nemiphumela emibi yezempilo, okuhlanganisa ukulimala kwesimiso sezinzwa esimaphakathi, isibindi, nezinso.

4. Naka indawo yokukhipha umoya lapho usebenzisa, futhi ugweme ukuhogela noma ukukudonsa.

5. Ukulahlwa kwemfucuza kufanele kuhambisane nemithetho neziqondiso ezifanele, futhi akufanele kulahlwe noma kukhishwe ngokuthanda kwakho.


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