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sehlahisoa

Styrene(CAS#100-42-5)

Thepa ea Lik'hemik'hale:

Foromo ea limolek'hule C8H8
'Misa oa Molar 104.15
Botenya 0.906 g/mL ho 25 °C
Melting Point -31 °C (hote.)
Boling Point 145-146 °C (hote.)
Flash point 88°F
Ho qhibiliha ha Metsi 0.3 g/L (20 ºC)
Solubility 0.24g/l
Khatello ea Mouoane 12.4 mm Hg ( 37.7 °C)
Tekano ea Mouoane 3.6 (khahlanong le moea)
Ponahalo Mokelikeli
Matla a Khoheli a khethehileng 0.909
Mmala E senang mmala
Moedi wa ho pepeseha TLV-TWA 50 ppm (~212 mg/m3) (ACGIHand NIOSH), 100 ppm (~425 mg/m3)(OSHA le MSHA); siling 200 ppm, peak600 ppm/5 min/3 h (OSHA); STEL 100 ppm (~425 mg/m3) (ACGIH).
Merck 14,8860
BRN 1071236
pKa > 14 (Schwarzenbach et al., 1993)
Boemo ba polokelo Boloka ho
Botsitso E tsitsitse, empa e ka ba polymerize ha e pepesehetse khanya. Hangata e romelloa ka inhibitor e qhibilihisitsoeng. Lintho tse lokelang ho qojoa li kenyelletsa li-acid tse matla, aluminium chloride, li-oxidizing tse matla, koporo,
E hloahloa Ha A na Moeeng
Qeto ea ho phatloha 1.1-8.9%(V)
Refractive Index n20/D 1.546(lit.)
Thepa ea 'Mele le ea Lik'hemik'hale Mokelikeli o mafura o se nang mmala o monko o monate.
ntlha e belang 145 ℃
ntlha ea leqhoa -30.6 ℃
boima bo lekanang 0.9059
index ea refractive 1.5467
ntlha e benyang 31.11 ℃
ho qhibiliha ha metsi, ho qhibiliha ka har'a ethanol le ether.
Sebelisa Haholo-holo e sebelisoa e le polystyrene, rabara ea maiketsetso, polasetiki ea boenjiniere, resin ea phapanyetsano ea ion le lisebelisoa tse ling tse tala.

Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

Likhoutu tsa Kotsi R10 – E ka cha
R20 – E kotsi ka ho hema
R36/38 – Ho hlohlona mahlong le letlalong.
R40 - Bopaki bo fokolang ba phello ea kankere
R36/37/38 – Ho tena mahlo, tsamaiso ya ho hema le letlalo.
R39/23/24/25 -
R23/24/25 – E na le chefo ka ho hema, ho kopana le letlalo le haeba e koetsoe.
R11 – E tuka Haholo
R48/20 -
R63 – Kotsi e ka bang teng ya kotsi ho ngwana ya esong ho hlahe
Tlhaloso ea Tšireletseho S23 - Se ke oa hema mouoane.
S36 - Apara liaparo tse loketseng tsa tšireletso.
S26 - Ha u kopana le mahlo, hlatsoa hang-hang ka metsi a mangata 'me u batle keletso ea bongaka.
S16 - Ipoloke hole le mehloli ea mollo.
S45 – Ha ho ka etsahala kotsi kapa ha o ikutlwa o sa phele hantle, batla keletso ya bongaka hanghang (bontsha leibole neng kapa neng ha ho kgoneha.)
S36/37 - Apara liaparo tse loketseng tsa tšireletso le liatlana.
S7 - Boloka setshelo se koetsoe ka thata.
S46 - Haeba u metsoa, ​​batla keletso ea bongaka hang-hang 'me u bontše setshelo sena kapa leibole.
Li-ID tsa UN UN 2055 3/PG 3
WGK Jeremane 2
RTECS WL3675000
TSCA Ee
Khoutu ea HS 2902 50 00
Sehlopha sa Likotsi 3
Sehlopha sa ho paka III
Chefo LD50 ka litoeba (mg / kg): 660 ± 44.3 ip; 90 ± 5.2 iv

 

Selelekela

Styrene, ke mokelikeli o se nang 'mala o nang le monko o khethehileng. Se latelang ke selelekela sa thepa, tšebeliso, mekhoa ea ho lokisa le tlhaiso-leseling ea polokeho ea styrene:

 

Boleng:

1. Boima bo bobebe.

2. E na le maemo a feto-fetohang mochesong oa kamore 'me e na le sebaka se tlase sa ho panya le moeli oa ho phatloha.

3. E kopane le mefuta e fapaneng ea lihlapolli tsa tlhaho 'me ke ntho ea bohlokoa haholo ea tlhaho.

 

Sebelisa:

1. Styrene ke lisebelisoa tsa bohlokoa tsa lik'hemik'hale tse tala, tse atisang ho sebelisoa ha ho etsoa palo e kholo ea polasetiki, rabara ea maiketsetso le likhoele.

2. Styrene e ka sebelisoa ho etsa lisebelisoa tsa maiketsetso tse kang polystyrene (PS), rabara ea polystyrene (SBR) le acrylonitrile-styrene copolymer.

3. E ka boela ea sebelisoa ho etsa lihlahisoa tsa lik'hemik'hale tse kang tatso le oli e tlotsang.

 

Mokhoa:

1. Styrene e ka fumanoa ka dehydrogenation ka ho futhumatsa le ho hatella limolek'hule tsa ethylene.

2. Styrene le hydrogen li ka boela tsa fumanoa ka ho futhumatsa le ho senya ethylbenzene.

 

Lintlha tsa Tšireletseho:

1. Styrene e ka cha 'me e lokela ho sireletsoa ho tloha mollong le mocheso o phahameng.

2. Ho kopana le letlalo ho ka baka ho teneha le ho hana ho hana, 'me ho lokela ho nkoa mehato e nepahetseng.

3. Ho pepeseha ha nako e telele kapa nako e telele ho ka ba le liphello tse mpe tsa bophelo bo botle, ho akarelletsa le tšenyo tsamaisong ea methapo e bohareng, sebete le liphio.

4. Ela hloko tikoloho ea moea ha u sebelisa, 'me u qobe ho hema kapa ho kena.

5. Ho lahloa ha litšila ho lokela ho tsamaellana le melao le melawana e amehang, 'me ha hoa lokela ho lahleloa kapa ho lahleloa ka boithatelo.


  • E fetileng:
  • E 'ngoe:

  • Ngola molaetsa wa hao mona mme o re romele wona