Furfural (CAS#98-01-1)

Ipropati yeMichiza:

Ifomula yeemolekyuli	C5H4O2
IMisa yeMolar	96.08
Ukuxinana	1.16 g/mL ku-25 °C (lit.)
Indawo yokunyibilika	-36 °C (izibane.)
Indawo yeBoling	162 °C (lit.)
Indawo yokuflasha	137°F
Inombolo yeJECFA	450
Ukunyibilika kwamanzi	8.3 g/100 mL
Ukunyibilika	I-95% ye-ethanol: i-soluble1ML / mL, icacile
Uxinzelelo loMphunga	13.5 mm Hg ( 55 °C)
Ukuxinana komphunga	3.31 (vs umoya)
Imbonakalo	Ulwelo
Umbala	brown kakhulu
Umda wokuvezwa	I-NIOSH REL: IDLH 100 ppm; I-OSHA PEL: TWA 5 ppm (20 mg/m3); ACGIHTLV: TWA 2 ppm (yamkelwe).
Merck	14,4304
I-BRN	105755
PH	>=3.0 (50g/l, 25℃)
Imeko yoGcino	Gcina ngaphantsi +30°C.
Uzinzo	Izinzile. Izinto ezimele zigwenywe ziquka iziseko ezinamandla, ii-oxidizing agents ezinamandla kunye ne-acids ezinamandla. Ukutsha.
Inovakalelo	Ubuthathaka bomoya
Umda wokuqhushumba	2.1-19.3%(V)
Refractive Index	n20/D 1.527
IiPropati zoMzimba kunye nezeMichiza	Ulwelo olunamafutha olungenambala olungenambala olunevumba elikhethekileyo elifana nebenzaldehyde. Umbala utshintsha ngokukhawuleza ubebomvu-mdaka xa utyhilekile ekukhanyeni nasemoyeni. Kulula ukuguquguquka ngomphunga. iqondo lokubila 161.7 ℃ indawo yokukhenkceza -36.5 ℃ ukuxinana kwesihlobo 1.1594 refractive index 1.5263 indawo edanyazayo 60 ℃ Unyibiliko lunyibilika kancinane emanzini, lunyibilika kwi-ethanol, ether, acetone, chloroform, benzene.
Sebenzisa	Isetyenziswa njengemathiriyeli ekrwada ye-organic synthesis, kodwa nakwindlela yokudityaniswa kweerasi, ivanishi, izibulali zinambuzane, amayeza, irabha kunye neengubo.

Thumela i-imeyile kuthi

Iinkcukacha zeMveliso

Iithegi zeMveliso

Iikhowudi zoMngcipheko	I-R21 – Iyingozi xa udibana nolusu I-R23/25 – Ityhefu ngokuphefumlelwa kwaye ukuba iginyiwe. R36/37 – Iyacaphukisa emehlweni nakwinkqubo yokuphefumla. R40 – Ubungqina obuncinane besiphumo somhlaza R36/37/38 – Ukucaphuka kwamehlo, inkqubo yokuphefumla kunye nolusu.
Inkcazelo yoKhuseleko	S26 – Xa udibana namehlo, hlambulula ngokukhawuleza ngamanzi amaninzi kwaye ufune iingcebiso zonyango. S36/37/39 – Nxiba iimpahla ezifanelekileyo zokukhusela, iiglavu kunye nokukhusela amehlo/ubuso. S45 - Kwimeko yengozi okanye ukuba uziva ungaphilanga, funa iingcebiso zonyango ngokukhawuleza (bonisa ileyibhile nanini na kunokwenzeka.) S1/2 – Gcina utshixiwe kwaye ungekho kude nabantwana. S36/37 – Nxiba iimpahla ezifanelekileyo zokukhusela kunye neeglavu.
Izazisi ze-UN	UN 1199 6.1/PG 2
WGK eJamani	2
RTECS	LT7000000
FLUKA BRAND F IIKHOWUDI	1-8-10
I-TSCA	Ewe
Ikhowudi ye-HS	2932 12 00
Inqaku Lengozi	Iyacaphukisa
IKlasi yeeNgozi	6.1
Iqela lokuPakisha	II
Ubutyhefu	I-LD50 ngomlomo kwiimpuku: 127 mg/kg (Jenner)

Intshayelelo

I-Furfural, eyaziwa ngokuba yi-2-hydroxyunsaturated ketone okanye i-2-hydroxypentanone. Oku kulandelayo sintshayelelo kwiipropati, ukusetyenziswa, iindlela zokulungiselela kunye nolwazi lokhuseleko lwe-furfural:

Umgangatho:

- Inenkangeleko engenambala kwaye inencasa ekhethekileyo eswiti.

- I-Furfural inonyibiliko oluphantsi emanzini, kodwa iyanyibilika kutywala nakwizinyibilikisi ze-ether.

- I-Furfural i-oxidized ngokulula kwaye iboliswa lula bubushushu.

Indlela:

- Indlela eqhelekileyo yokulungiselela i-furfural ifumaneka nge-oxidation ye-C6 alkyl ketones (umz., i-hexanone).

- Umzekelo, i-hexanone inokufakwa kwi-oxidized kwi-furfural usebenzisa i-oxygen kunye ne-catalysts ezifana ne-potassium permanganate okanye i-hydrogen peroxide.

- Ukongeza, i-acetic acid inokuphinda ithathwe ngeendlela ezahlukeneyo ze-C3-C5 alcohols (ezifana ne-isoamyl alcohol, njl.) ukwenza i-ester ehambelanayo, kwaye iyancipha ukufumana i-furfural.

Ulwazi ngoKhuseleko:

- I-Furfural inetyhefu ephantsi kodwa isafuna ukusetyenziswa kwaye igcinwe ngononophelo.

• Kuphephe ukudibana nolusu kunye namehlo, kwaye uhlambe ngokukhawuleza ngamanzi amaninzi ukuba iyenzeka.

- Kufuneka kuthatyathwe unonophelo ukuthintela ukudibana neeoksijini ezinamandla, imithombo yokutshisa, njl njl ngexesha lokugcinwa kunye nokusetyenziswa ukukhusela umlilo okanye ukuqhuma.

- Iimeko ezifanelekileyo zokungenisa umoya kufuneka zibonelelwe ngexesha lokusetyenziswa ukuze kuthintelwe ukuphefumla umphunga.

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

Okulandelayo: 4-Methyltetrahydrothiophen-3-One (CAS#50565-25-8)

Bhala umyalezo wakho apha kwaye uwuthumele kuthi