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mankhwala

Styrene(CAS#100-42-5)

Chemical Property:

Molecular Formula C8H8
Molar Misa 104.15
Kuchulukana 0.906 g/mL pa 25 °C
Melting Point -31 °C (kuyatsa)
Boling Point 145-146 °C (kuyatsa)
Pophulikira 88°F
Kusungunuka kwamadzi 0.3 g/L (20 ºC)
Kusungunuka 0.24g/l
Kuthamanga kwa Vapor 12.4 mm Hg (37.7 °C)
Kuchuluka kwa Vapor 3.6 (vs mpweya)
Maonekedwe Madzi
Specific Gravity 0.909
Mtundu Zopanda mtundu
Malire Owonetsera TLV-TWA 50 ppm (~212 mg/m3) (ACGIHand NIOSH), 100 ppm (~425 mg/m3)(OSHA ndi MSHA); denga 200 ppm, peak600 ppm/5 min/3 h (OSHA); STEL 100 ppm (~425 mg/m3) (ACGIH).
Merck 14,8860
Mtengo wa BRN 1071236
pKa > 14 (Schwarzenbach et al., 1993)
Mkhalidwe Wosungira Sungani pa
Kukhazikika Chokhazikika, koma chikhoza kupangika poyang'ana kuwala. Nthawi zambiri amatumizidwa ndi inhibitor yosungunuka. Zinthu zomwe ziyenera kupeŵedwa ndi monga ma asidi amphamvu, aluminium chloride, oxidizing amphamvu, mkuwa,
Zomverera Zosamva mpweya
Zophulika Malire 1.1-8.9% (V)
Refractive Index n20/D 1.546(lit.)
Zakuthupi ndi Zamankhwala Mafuta amadzimadzi opanda mtundu okhala ndi fungo lonunkhira.
kutentha kwa 145 ℃
kuzizira -30.6 ℃
kachulukidwe wachibale 0.9059
Refractive index 1.5467
kung'anima 31.11 ℃
kusungunuka kosasungunuka m'madzi, kusungunuka mu ethanol ndi ether.
Gwiritsani ntchito Amagwiritsidwa ntchito makamaka ngati polystyrene, mphira kupanga, mapulasitiki engineering, ion kuwombola utomoni ndi zipangizo zina.

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Zizindikiro Zowopsa R10 - Yoyaka
R20 - Zowopsa pokoka mpweya
R36/38 - Zokwiyitsa maso ndi khungu.
R40 - Umboni wochepa wa zotsatira za carcinogenic
R36/37/38 - Zokwiyitsa maso, kupuma komanso khungu.
R39/23/24/25 -
R23/24/25 – Poizoni pokoka mpweya, kukhudzana ndi khungu komanso kummeza.
R11 - Yoyaka Kwambiri
R48/20 -
R63 - Chiwopsezo chotheka kuvulaza mwana wosabadwa
Kufotokozera Zachitetezo S23 - Osapuma mpweya.
S36 - Valani zovala zoyenera zodzitetezera.
S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala.
S16 - Khalani kutali ndi magwero oyatsira.
S45 - Pakachitika ngozi kapena ngati simukumva bwino, funsani upangiri wachipatala nthawi yomweyo (onetsani chizindikirocho ngati kuli kotheka.)
S36/37 - Valani zovala zoyenera zodzitchinjiriza ndi magolovesi.
S7 - Sungani chidebe chotsekedwa mwamphamvu.
S46 - Mukamezedwa, funsani upangiri wachipatala mwachangu ndikuwonetsa chidebe kapena chizindikirochi.
Ma ID a UN UN 2055 3/PG 3
WGK Germany 2
Mtengo wa RTECS WL3675000
TSCA Inde
HS kodi 2 902 50 00
Kalasi Yowopsa 3
Packing Group III
Poizoni LD50 mu mbewa (mg / kg): 660 ± 44.3 ip; 90 ± 5.2 iv

 

Mawu Oyamba

Styrene, ndi madzi opanda mtundu okhala ndi fungo lonunkhira lapadera. Zotsatirazi ndizofotokozera za katundu, ntchito, njira zokonzekera ndi chitetezo cha styrene:

 

Ubwino:

1. Kachulukidwe wopepuka.

2. Imasinthasintha kutentha kwa chipinda ndipo imakhala ndi malo otsika kwambiri komanso malire a kuphulika.

3. Ndi miscible ndi zosiyanasiyana zosungunulira organic ndipo ndi zofunika kwambiri organic mankhwala.

 

Gwiritsani ntchito:

1. Styrene ndi mankhwala ofunika kwambiri, omwe nthawi zambiri amagwiritsidwa ntchito popanga mapulasitiki ambiri, mphira wopangira ndi ulusi.

2. Styrene ingagwiritsidwe ntchito kupanga zinthu zopangidwa monga polystyrene (PS), rabara ya polystyrene (SBR) ndi acrylonitrile-styrene copolymer.

3. Itha kugwiritsidwanso ntchito popanga zinthu zama mankhwala monga zokometsera ndi mafuta opaka mafuta.

 

Njira:

1. Styrene ikhoza kupezedwa ndi dehydrogenation ndi kutentha ndi kukakamiza mamolekyu a ethylene.

2. Styrene ndi haidrojeni angapezekenso ndi kutentha ndi kusweka ethylbenzene.

 

Zambiri Zachitetezo:

1. Styrene ndi yoyaka ndipo iyenera kutetezedwa kuti isapse ndi kutentha kwambiri.

2. Kukhudzana ndi khungu kungayambitse kuyabwa ndi kuyabwa, ndipo njira zoyenera ziyenera kuchitidwa.

3. Kuwonekera kwa nthawi yaitali kapena kwakukulu kungakhale ndi zotsatira zoipa pa thanzi, kuphatikizapo kuwonongeka kwa dongosolo lapakati la mitsempha, chiwindi, ndi impso.

4. Samalirani malo opumira mpweya mukamagwiritsa ntchito, ndipo pewani kupuma kapena kulowa.

5. Kutaya zinyalala kuyenera kutsata malamulo ndi malamulo oyenera, ndipo zisatayidwe kapena kutayidwa mwakufuna.


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