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ngwaahịa

Styrene (CAS#100-42-5)

Ngwongwo kemịkalụ:

Usoro ihe omimi C8H8
Molar Mass 104.15
Njupụta 0.906 g/mL na 25 Celsius C
Ebe Na-agbaze -31C (ọkụ ọkụ)
Ebe Boling 145-146 Celsius C (ọkụ)
Ebe mgbari 88°F
Mmiri Solubility 0.3 g/L (20ºC)
Solubility 0.24g / l
Uzuoku nrịbama 12.4 mm Hg (37.7 Celsius C)
Uzuoku Njupụta 3.6 (na ikuku)
Ọdịdị Mmiri mmiri
Nnukwu ike ndọda 0,909
Agba Enweghị agba
Oke ngosi TLV-TWA 50 ppm (~212 mg/m3) (ACGIHand NIOSH), 100 ppm (~425 mg/m3) (OSHA na MSHA); elu ụlọ 200 ppm, kacha elu 600 ppm / 5 min / 3 h (OSHA); STEL 100 ppm (425 mg / m3) (ACGIH).
Merck 14,8860
BRN 1071236
pKa > 14 (Schwarzenbach et al., 1993)
Ọnọdụ Nchekwa Chekwaa na
Nkwụsi ike Ọ kwụsiri ike, mana ọ nwere ike mee ka ọ bụrụ polymer ikpughe na ìhè. A na-ebufekarị ya na ihe mgbochi gbazere. Ihe ndị a ga-ezere gụnyere acids siri ike, aluminom chloride, ihe ndị na-eme ka oxidizing siri ike, ọla kọpa,
Mmetụta Mmetụta ikuku
Oke ihe mgbawa 1.1-8.9% (V)
Ntụgharị ntụgharị uche n20/D 1.546(ọkụ)
Njirimara anụ ahụ na kemịkalụ Mmiri mmanụ na-enweghị agba nwere isi ísì ụtọ.
esi esi 145 ℃
ebe oyi - 30.6 ℃
ikwu njupụta 0.9059
index refractive 1.5467
ihe ọkụ ọkụ 31.11 ℃
solubility insoluble na mmiri, soluble na ethanol na ether.
Jiri A na-ejikarị ya dị ka polystyrene, roba sịntetik, plastik injinia, resin mgbanwe ion na akụrụngwa ndị ọzọ.

Nkọwa ngwaahịa

Mkpado ngwaahịa

Koodu ihe egwu R10 - ọkụ
R20 - na-emerụ ahụ site na iku ume
R36 / 38 - na-akpasu anya na akpụkpọ ahụ.
R40 - Ihe akaebe dị oke nke mmetụta carcinogenic
R36 / 37/38 - na-akpasu iwe na anya, usoro iku ume na akpụkpọ ahụ.
R39/23/24/25 -
R23/24/25 - Na-egbu egbu site na iku ume, na kọntaktị na akpụkpọ ahụ ma ọ bụrụ na iloro ya.
R11 - Na-agba ọkụ nke ukwuu
R48/20 -
R63 - Ihe ize ndụ nwere ike imerụ nwa e bu n'afọ
Nkọwapụta nchekwa S23 - Ekula uzuoku.
S36 - Yiri uwe nchebe kwesịrị ekwesị.
S26 - N'ihe banyere kọntaktị na anya, kpochaa ozugbo na ọtụtụ mmiri ma chọọ ndụmọdụ ahụike.
S16 - Wepụ ya na isi mmalite nke mgbanye.
S45 - Ọ bụrụ na ihe mberede ma ọ bụ ọ bụrụ na ahụ adịghị gị mma, chọọ ndụmọdụ ahụike ozugbo (gosi akara ahụ mgbe ọ bụla enwere ike.)
S36/37 - Yiri uwe nchebe kwesịrị ekwesị na uwe aka.
S7 - Debe akpa ahụ nke ọma.
S46 - Ọ bụrụ na iloro, chọọ ndụmọdụ ahụike ozugbo wee gosi akpa ma ọ bụ akara a.
NJ UN UN 2055 3/PG 3
WGK Germany 2
RTECS WL3675000
TSCA Ee
Koodu HS 2902 50 00
Klas Hazard 3
Otu nkwakọ ngwaahịa III
Nsi LD50 na ụmụ oke (mg/kg): 660 ± 44.3 ip; 90 ± 5.2 iv

 

Okwu mmalite

Styrene, bụ mmiri mmiri na-enweghị agba nke nwere isi ísì pụrụ iche. Ihe na-esonụ bụ mmalite nke njirimara, ojiji, ụzọ nkwadebe na ozi nchekwa nke styrene:

 

Ogo:

1. Mkpa ọkụ njupụta.

2. Ọ na-agbanwe agbanwe na ụlọ okpomọkụ ma nwee obere ọkụ ọkụ na njedebe mgbawa.

3. Ọ bụ miscible na ihe dị iche iche nke organic mgbaze na bụ oké mkpa organic ihe.

 

Jiri:

1. Styrene bụ ihe dị mkpa kemịkalụ akụrụngwa, na-ejikarị eme ihe na njikọ nke ọnụ ọgụgụ dị ukwuu nke plastik, roba sịntetik na eriri.

2. Enwere ike iji Styrene mee ihe ndị na-emepụta ihe dịka polystyrene (PS), polystyrene roba (SBR) na acrylonitrile-styrene copolymer.

3. Enwere ike iji ya rụpụta ngwaahịa kemịkalụ dị ka ụtọ na mmanu mmanu.

 

Usoro:

1. Enwere ike nweta Styrene site na mmiri na-ekpo ọkụ site na ikpo ọkụ na nrụgide ethylene molecules.

2. Styrene na hydrogen nwekwara ike nweta site na kpo oku na ịgbawa ethylbenzene.

 

Ozi nchekwa:

1. Styrene na-ere ọkụ na ekwesịrị ichebe ya site na mgbanye ọkụ na okpomọkụ dị elu.

2. Mmekọahụ na akpụkpọ ahụ nwere ike ịkpata mgbakasị ahụ na mmeghachi ahụ nfụkasị ahụ, na ekwesịrị ịkpachapụ anya kwesịrị ekwesị.

3. Ogologo oge ma ọ bụ nnukwu ikpughe nwere ike inwe mmetụta ahụike dị njọ, gụnyere mmebi nke usoro nhụjuanya nke etiti, imeju, na akụrụ.

4. Lezienụ anya na ikuku ikuku mgbe ị na-eji, ma zere iku ume ma ọ bụ oriri.

5. Mkpofu mkpofu kwesịrị ịgbaso iwu na ụkpụrụ dị mkpa, ma e kwesịghị ịkwanye ma ọ bụ wepụ ya ma ọ bụrụ na ọ masịrị ya.


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