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I-Fumaric acid CAS 110-17-8 Isithombe Esifakiwe
  • I-Fumaric acid CAS 110-17-8 1

I-Fumaric acid CAS 110-17-8

Isakhiwo Samakhemikhali:

I-Molecular Formula I-C4H4O4
I-Molar Mass 116.07
Ukuminyana 1.62
I-Melting Point 298-300 °C (i-subl.) (ekhanyayo)
I-Boling Point 137.07°C (isilinganiso esinzima)
I-Flash Point 230 °C
Inombolo ye-JECFA 618
Ukuncibilika kwamanzi 0.63 g/100 mL (25 ºC)
Ukuncibilika I-Soluble ku-DMSO, amanzi, ayincibiliki ku-fat-soluble organic solvents
I-Vapor Presure 1.7 mm Hg ( 165 °C)
Ukubukeka Impushana emhlophe noma ikristalu engenambala
Umbala Emhlophe
I-Merck 14,4287
I-BRN 605763
pKa 3.02, 4.38(ku-25℃)
PH 3.19(1 mM isixazululo);2.57(10 mM isixazululo);2.03(100 mM isixazululo);
Isimo Sesitoreji Gcina ngaphansi kuka +30°C.
Ukuzinza Izinzile ezingeni lokushisa legumbi. Ibola cishe ku-230 C. Ayihambisani nama-oxidizing agents aqinile, izisekelo, ama-ejenti okunciphisa. Okuvuthayo.
Kuyazwela Ukumunca kalula umswakama
Umkhawulo Oqhumayo 40%
I-Refractive Index 1.5260 (isilinganiso)
I-MDL I-MFCD00002700
Izakhiwo Zomzimba Nezamakhemikhali Izici ze-monoclinic engenambala efana nenaliti noma i-lobular Crystal, ukunambitheka okumuncu kwesithelo.
ukunyibilika: kuncibilika kancane emanzini, i-ether ne-acetic acid, inyibilika ku-ethanol. Cishe ayincibiliki ku-chloroform.
Sebenzisa Ukuze kwenziwe i-Unsaturated Polyester Resin, izibulala-zinambuzane, i-asidi nama-amino acid

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Izimpawu Eziyingozi Xi - Irritant
Amakhodi Engozi 36 - Ukucasula emehlweni
Incazelo Yokuphepha 26 - Uma uthintana namehlo, geza ngokushesha ngamanzi amaningi futhi ufune iseluleko sezokwelapha.
Ama-ID e-UN I-UN 9126
I-WGK Germany 1
I-RTECS LS9625000
I-TSCA Yebo
Ikhodi ye-HS 29171900
Ubuthi I-LD50 ngomlomo kuNogwaja: 9300 mg/kg LD50 dermal Rabbit 20000 mg/kg

 

Isingeniso

I-Fumaric acid. Okulandelayo yisingeniso sezakhiwo, ukusetshenziswa, izindlela zokulungiselela kanye nolwazi lokuphepha lwe-transbutalic acid:

 

Ikhwalithi:

- I-Transbutadiic acid iyikristalu engenambala noma okuqinile okumhlophe okunokunambitheka okumuncu okubabayo.

- Iyancibilika emanzini kanye nezincibilikisi eziningi eziphilayo ezifana notshwala nama-ether.

- Emazingeni okushisa aphezulu, i-transbutylic acid iyaphuka ukuze ikhiqize i-carbon dioxide ne-acetone.

 

Sebenzisa:

- Isetshenziswa kabanzi ekulungiseleleni ama-polyester resins ukuze kwenziwe imikhiqizo efana ne-coatings, amapulasitiki, kanye nemicu.

 

Indlela:

- I-Transbutenedic acid ingatholakala ngokusabela kwe-brominated butene ne-sodium carbonate. Indlela ethile yokuhlanganisa ihlanganisa izinyathelo eziningi, okuhlanganisa ukulungiswa kwe-butene, ukusabela kwe-bromination, kanye ne-alkaline hydrolysis.

 

Ulwazi Lokuphepha:

- I-Transbutadiic acid iyinhlanganisela ecasulayo engase ibangele ukucasuka nokushiswa ngokuthinta isikhumba namehlo.

- Gqoka izinto zokuzivikela ezifanele ezifana namagilavu, izibuko, nezingubo zokuzivikela ngesikhathi sokuphatha.

- Gwema ukuhogela uthuli noma umhwamuko wayo futhi kufanele isebenze endaweni enomoya omuhle.

- Imithetho yendawo kanye nezinqubo zokusebenza eziphephile kufanele zilandelwe lapho ugcina futhi uphatha inhlanganisela.

 

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