Furfural (CAS#98-01-1)

Ohun-ini Kemikali:

Fọọmu Molecular	C5H4O2
Molar Mass	96.08
iwuwo	1.16 g/mL ni 25 °C (tan.)
Ojuami Iyo	-36°C (tan.)
Ojuami Boling	162°C (tan.)
Oju filaṣi	137°F
Nọmba JECFA	450
Omi Solubility	8.3 g/100 milimita
Solubility	95% ethanol: soluble1ML/ml, ko o
Vapor Presure	13.5 mm Hg (55°C)
Òru Òru	3.31 (la afẹfẹ)
Ifarahan	Omi
Àwọ̀	gan jin brown
Ifilelẹ Ifarahan	NIOSH REL: IDLH 100 ppm; OSHA PEL: TWA 5 ppm (20 mg / m3); ACGIHTLV: TWA 2 ppm (gba).
Merck	14.4304
BRN	105755
PH	>=3.0 (50g/l, 25℃)
Ibi ipamọ Ipo	Fipamọ ni isalẹ + 30 ° C.
Iduroṣinṣin	Idurosinsin. Awọn nkan ti o yẹra fun pẹlu awọn ipilẹ ti o lagbara, awọn aṣoju oxidizing ti o lagbara ati awọn acids ti o lagbara. Flammable.
Ni imọlara	Afẹfẹ Sensitive
ibẹjadi iye to	2.1-19.3% (V)
Atọka Refractive	n20 / D 1.527
Ti ara ati Kemikali Properties	Olomi ororo sihin ti ko ni awọ pẹlu oorun pataki ti o jọra si benzaldehyde. Awọ naa yipada ni iyara si pupa-brown nigbati o ba farahan si ina ati afẹfẹ. O rọrun lati yipada pẹlu oru. farabale ojuami 161,7 ℃ didi ojuami -36,5 ℃ iwuwo ojulumo 1.1594 itọka ifura 1.5263 filasi ojuami 60 ℃ solubility die-die tiotuka ninu omi, tiotuka ni ethanol, ether, acetone, chloroform, benzene.
Lo	Ti a lo bi awọn ohun elo aise fun iṣelọpọ Organic, ṣugbọn tun fun iṣelọpọ ti resins, varnishes, ipakokoropaeku, awọn oogun, roba ati awọn aṣọ.

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Alaye ọja

ọja Tags

Awọn koodu ewu	R21 - Ipalara ni olubasọrọ pẹlu awọ ara R23/25 - Majele nipasẹ ifasimu ati ti o ba gbe. R36 / 37 - Irritating si oju ati eto atẹgun. R40 - Ẹri to lopin ti ipa carcinogenic R36 / 37/38 - Irritating si oju, eto atẹgun ati awọ ara.
Apejuwe Abo	S26 - Ni ọran ti olubasọrọ pẹlu awọn oju, fi omi ṣan lẹsẹkẹsẹ pẹlu ọpọlọpọ omi ki o wa imọran iṣoogun. S36 / 37/39 - Wọ aṣọ aabo to dara, awọn ibọwọ ati aabo oju / oju. S45 – Ni ọran ti ijamba tabi ti o ba ni ailara, wa imọran iṣoogun lẹsẹkẹsẹ (fi aami han nigbakugba ti o ṣee ṣe.) S1/2 – Jeki ni titiipa si oke ati ni arọwọto awọn ọmọde. S36 / 37 - Wọ aṣọ aabo ati awọn ibọwọ to dara.
UN ID	UN 1199 6.1/PG2
WGK Germany	2
RTECS	LT7000000
FLUKA BRAND F koodu	1-8-10
TSCA	Bẹẹni
HS koodu	2932 12 00
Akọsilẹ ewu	Irritant
Kíláàsì ewu	6.1
Iṣakojọpọ Ẹgbẹ	II
Oloro	LD50 ẹnu ni awọn eku: 127 mg/kg (Jenner)

Ọrọ Iṣaaju

Furfural, ti a tun mọ si ketone 2-hydroxyunsaturated tabi 2-hydroxypentanone. Atẹle jẹ ifihan si awọn ohun-ini, awọn lilo, awọn ọna igbaradi ati alaye ailewu ti furfural:

Didara:

- O ni irisi ti ko ni awọ ati pe o ni adun didùn pataki kan.

- Furfural ni kekere solubility ninu omi, sugbon o jẹ tiotuka ni oti ati ether epo.

- Furfural jẹ irọrun oxidized ati irọrun ti bajẹ nipasẹ ooru.

Ọna:

- Ọna ti o wọpọ fun igbaradi furfural ni a gba nipasẹ ifoyina ti awọn ketones C6 alkyl (fun apẹẹrẹ, hexanone).

- Fun apẹẹrẹ, hexanone le jẹ oxidized si furfural nipa lilo atẹgun ati awọn ayase gẹgẹbi potasiomu permanganate tabi hydrogen peroxide.

Ni afikun, acetic acid tun le ṣe atunṣe pẹlu ọpọlọpọ awọn ọti-waini C3-C5 (gẹgẹbi ọti isoamyl, ati bẹbẹ lọ) lati ṣe ester ti o baamu, ati lẹhinna dinku lati gba furfural.

Alaye Abo:

- Furfural ni eero kekere ṣugbọn o tun nilo lati lo ati fipamọ pẹlu itọju.

- Yago fun olubasọrọ pẹlu awọ ara ati oju, ki o si fi omi ṣan lẹsẹkẹsẹ pẹlu ọpọlọpọ omi ti o ba ṣe.

- Itọju yẹ ki o ṣe itọju lati yago fun olubasọrọ pẹlu awọn oxidants ti o lagbara, awọn orisun ina, ati bẹbẹ lọ lakoko ipamọ ati lilo lati dena ina tabi bugbamu.

- Awọn ipo eefun ti o dara yẹ ki o pese lakoko lilo lati yago fun ifasimu ti awọn vapors furfural.

Ti tẹlẹ: 2-Isobutyl-3-Methyl Pyrazine (CAS#13925-06-9)

Itele: 4-Methyltetrahydrothiophen-3-Ọkan (CAS # 50565-25-8)

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