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Acetaldehyde(CAS#75-07-0)

Chemical Property:

Molecular Formula C2H4O
Misa ya Molar 44.05
Kuchulukana 0.785 g/mL pa 25 °C (kuyatsa)
Melting Point -125 °C (kuyatsa)
Boling Point 21 °C (kuyatsa)
Pophulikira 133 ° F
Nambala ya JECFA 80
Kusungunuka kwamadzi > 500 g/L (20 ºC)
Kusungunuka mowa: zosungunuka
Kuthamanga kwa Vapor 52 mm Hg (37 °C)
Kuchuluka kwa Vapor 1.03 (vs mpweya)
Maonekedwe yankho
Specific Gravity 0.823 (20/4℃) (?90% Soln.)
Mtundu Zoyera mpaka zoyera
Kununkhira Fungo lamphamvu, lonunkhira bwino lomwe limawonekera pa 0.0068 mpaka 1000 ppm (kutanthauza = 0.067 ppm)
Malire Owonetsera TLV-TWA 180 mg/m3 (100 ppm) (ACGIH), 360 mg/m3 (200 ppm) (NIOSH); STEL270 mg/m3 (150 ppm); IDLH 10,000 ppm.
Merck 14,39
Mtengo wa BRN 505984
pKa 13.57 (pa 25 ℃)
PH 5 (10g/l, H2O, 20 ℃)
Mkhalidwe Wosungira 2-8 ° C
Kukhazikika Wokhazikika, koma wosamva mpweya. Zinthu zomwe ziyenera kupeŵedwa ndi monga ma oxidizing amphamvu, ma asidi amphamvu, ochepetsera, alkali, ma halojeni, ma halogen oxides. Zoyaka kwambiri. Zosakaniza za nthunzi/mpweya zimaphulika
Zomverera Zosamva mpweya
Zophulika Malire 4-57% (V)
Refractive Index n20/D 1.377
Zakuthupi ndi Zamankhwala Zopanda mtundu, zoyaka, zosakhazikika, zosavuta kuyenda zamadzimadzi, zokometsera komanso fungo loyipa.
malo osungunuka -123.5 ℃
kutentha kwa 20.16 ℃
kachulukidwe wachibale 0.7780
Refractive index 1.3311
kung'anima -38 ℃
kusungunuka m'madzi, ethanol, diethyl ether, benzene, petulo, toluene, xylene ndi acetone ndizosiyana.
Gwiritsani ntchito Amagwiritsidwa ntchito kwambiri pokonza acetic acid, acetic anhydride, butyl aldehyde, octanol, pentaerythritol, triacetaldehyde ndi zina zofunika mankhwala zopangira.

Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Zizindikiro Zowopsa R23/24/25 – Poizoni pokoka mpweya, kukhudzana ndi khungu komanso kummeza.
R34 - Imayambitsa kuyaka
R40 - Umboni wochepa wa zotsatira za carcinogenic
R43 - Itha kuyambitsa chidwi pakukhudzana ndi khungu
R36/37 - Zokhumudwitsa m'maso ndi kupuma.
R12 - Yoyaka Kwambiri
R67 - Nthunzi imatha kuyambitsa kugona komanso chizungulire
R11 - Yoyaka Kwambiri
R41 - Kuopsa kwa kuwonongeka kwakukulu kwa maso
R22 - Zowopsa ngati zitamezedwa
R10 - Yoyaka
R19 - Itha kupanga ma peroxides ophulika
Kufotokozera Zachitetezo S36/37 - Valani zovala zoyenera zodzitchinjiriza ndi magolovesi.
S33 - Tengani njira zodzitchinjiriza motsutsana ndi kutulutsa kosasunthika.
S16 - Khalani kutali ndi magwero oyatsira.
S26 - Mukakhudza maso, yambani nthawi yomweyo ndi madzi ambiri ndikupempha uphungu wachipatala.
Ma ID a UN UN 1198 3/PG 3
WGK Germany 2
Mtengo wa RTECS Mtengo wa LP8925000
FLUKA BRAND F CODES 10
TSCA Inde
HS kodi 29121200
Kalasi Yowopsa 3
Packing Group I
Poizoni LD50 pamlomo makoswe: 1930 mg/kg (Smyth)

 

Mawu Oyamba

Acetaldehyde, yomwe imadziwikanso kuti acetaldehyde kapena ethylaldehyde, ndi organic pawiri. Zotsatirazi ndizofotokozera za katundu, ntchito, njira zokonzekera ndi chidziwitso cha chitetezo cha acetaldehyde:

 

Ubwino:

1. Ndi madzi opanda mtundu okhala ndi zokometsera komanso fungo lamphamvu.

2. Zimasungunuka m'madzi, mowa ndi zosungunulira za ether, ndipo zimatha kusungunuka.

3. Ili ndi polarity yapakatikati ndipo imatha kugwiritsidwa ntchito ngati chosungunulira chabwino.

 

Gwiritsani ntchito:

1. Amagwiritsidwa ntchito kwambiri popanga mafakitale.

2. Ndi zofunika zopangira kwa synthesis ena mankhwala.

3. Ikhoza kugwiritsidwa ntchito kupanga mankhwala monga vinyl acetate ndi butyl acetate.

 

Njira:

Pali njira zingapo zopangira acetaldehyde, yomwe nthawi zambiri imapangidwa ndi catalytic oxidation ya ethylene. Njirayi ikuchitika pogwiritsa ntchito okosijeni ndi zitsulo zothandizira (mwachitsanzo, cobalt, iridium).

 

Zambiri Zachitetezo:

1. Ndi chinthu chapoizoni, chomwe chimakwiyitsa khungu, maso, kupuma ndi dongosolo la m'mimba.

2. Ndi madzi oyaka, omwe angayambitse moto pamene akuwonekera pamoto wotseguka kapena kutentha kwakukulu.

3. Njira zoyenera zotetezera ziyenera kuchitidwa pogwiritsa ntchito acetaldehyde, monga kuvala magolovesi otetezera, magalasi ndi zopumira, ndikuwonetsetsa kuti zimagwira ntchito pamalo abwino.


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