asia_oju-iwe

ọja

Acetaldehyde (CAS # 75-07-0)

Ohun-ini Kemikali:

Fọọmu Molecular C2H4O
Molar Mass 44.05
iwuwo 0.785 g/ml ni 25°C (tan.)
Ojuami Iyo -125°C (tan.)
Ojuami Boling 21°C (tan.)
Oju filaṣi 133°F
Nọmba JECFA 80
Omi Solubility > 500 g/L (20ºC)
Solubility alcohols: tiotuka
Vapor Presure 52 mm Hg (37°C)
Òru Òru 1.03 (la afẹfẹ)
Ifarahan ojutu
Specific Walẹ 0.823 (20/4℃) (?90% Soln.)
Àwọ̀ Funfun si pa-funfun
Òórùn Pungent, oorun eso ti a rii ni 0.0068 si 1000 ppm (itumọ = 0.067 ppm)
Ifilelẹ Ifarahan 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
BRN 505984
pKa 13.57(ni 25℃)
PH 5 (10g/l, H2O, 20℃)
Ibi ipamọ Ipo 2-8°C
Iduroṣinṣin Idurosinsin, ṣugbọn air kókó. Awọn nkan ti o yẹra fun pẹlu awọn aṣoju oxidizing ti o lagbara, awọn acids ti o lagbara, awọn aṣoju idinku, awọn alkalies, halogens, halogen oxides. Gíga iná. Vapour / air apapo ibẹjadi
Ni imọlara Afẹfẹ Sensitive
ibẹjadi iye to 4-57% (V)
Atọka Refractive n20 / D 1.377
Ti ara ati Kemikali Properties Alailowaya, flammable, iyipada, rọrun lati san ti omi, lata ati õrùn pungent.
yo ojuami -123,5 ℃
farabale ojuami 20,16 ℃
iwuwo ojulumo 0.7780
atọka refractive 1.3311
filasi ojuami -38 ℃
solubility ninu omi, ethanol, diethyl ether, benzene, petirolu, toluene, xylene ati acetone jẹ miscible.
Lo Ni akọkọ ti a lo fun igbaradi acetic acid, acetic anhydride, butyl aldehyde, octanol, pentaerythritol, triacetaldehyde ati awọn ohun elo aise kemikali pataki miiran.

Alaye ọja

ọja Tags

Awọn koodu ewu R23 / 24/25 - Majele nipasẹ ifasimu, ni olubasọrọ pẹlu awọ ara ati ti o ba gbe.
R34 - Awọn okunfa sisun
R40 - Ẹri to lopin ti ipa carcinogenic
R43 – Le fa ifamọ nipa ara olubasọrọ
R36 / 37 - Irritating si oju ati eto atẹgun.
R12 - Lalailopinpin flammable
R67 – Vapors le fa drowsiness ati dizziness
R11 - Gíga flammable
R41 - Ewu ti pataki ibaje si oju
R22 – Ipalara ti o ba gbe
R10 - flammable
R19 - Le dagba awọn ibẹjadi peroxides
Apejuwe Abo S36 / 37 - Wọ aṣọ aabo ati awọn ibọwọ to dara.
S33 - Ṣe awọn ọna iṣọra lodi si awọn idasilẹ aimi.
S16 – Jeki kuro lati awọn orisun ti iginisonu.
S26 - Ni ọran ti olubasọrọ pẹlu awọn oju, fi omi ṣan lẹsẹkẹsẹ pẹlu ọpọlọpọ omi ki o wa imọran iṣoogun.
UN ID UN 1198 3/PG 3
WGK Germany 2
RTECS LP8925000
FLUKA BRAND F koodu 10
TSCA Bẹẹni
HS koodu 29121200
Kíláàsì ewu 3
Iṣakojọpọ Ẹgbẹ I
Oloro LD50 ẹnu ni awọn eku: 1930 mg/kg (Smyth)

 

Ọrọ Iṣaaju

Acetaldehyde, ti a tun mọ si acetaldehyde tabi ethylaldehyde, jẹ agbo-ara Organic. Atẹle jẹ ifihan si awọn ohun-ini, awọn lilo, awọn ọna igbaradi ati alaye ailewu ti acetaldehyde:

 

Didara:

1. O jẹ omi ti ko ni awọ pẹlu õrùn lata ati õrùn.

2. O ti wa ni tiotuka ninu omi, oti ati ether epo, ati ki o le jẹ iyipada.

3. O ni o ni alabọde polarity ati ki o le ṣee lo bi awọn kan ti o dara epo.

 

Lo:

1. O ti wa ni lilo pupọ ni iṣelọpọ ile-iṣẹ.

2. O jẹ ohun elo aise pataki fun iṣelọpọ ti awọn agbo ogun miiran.

3. O le ṣee lo lati ṣe awọn kemikali gẹgẹbi vinyl acetate ati butyl acetate.

 

Ọna:

Awọn ọna pupọ lo wa lati mura acetaldehyde, eyiti o wọpọ julọ eyiti o jẹ iṣelọpọ nipasẹ oxidation catalytic ti ethylene. Ilana naa ni a ṣe ni lilo atẹgun ati awọn ayase irin (fun apẹẹrẹ, cobalt, iridium).

 

Alaye Abo:

1. O jẹ nkan ti o majele, eyiti o jẹ irritating si awọ ara, oju, atẹgun atẹgun ati eto ounjẹ.

2. O tun jẹ omi ti o ni ina, eyiti o le fa ina nigbati o ba farahan si ina tabi iwọn otutu ti o ga.

3. Awọn igbese ailewu ti o yẹ yẹ ki o mu nigba lilo acetaldehyde, gẹgẹbi wọ awọn ibọwọ aabo, awọn gilaasi ati awọn atẹgun, ati rii daju pe o ṣiṣẹ ni agbegbe ti o ni afẹfẹ daradara.


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