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Jeneng Produk: |
Gamma ValerAlactone |
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CAS: |
108-29-2 |
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Mf: |
C5H8O2 |
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Mw: |
100.12 |
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EineCs: |
203-569-5 |
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File mol: |
108-29-2.mol |
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Titik lebur |
-31 ° C (lit.) |
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Titik Giling |
207-208 ° C (lit.) |
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Kapadhetan |
1.05 g / ml ing 25 ° C (Lit.) |
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Kapadhetan uap |
3.45 (vs udhara) |
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Indeks Refleksi |
N20 / d 1.432 (amben.) |
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FEMA |
3103 | Gamma-valerArolctone |
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FP |
204.8 ° F |
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Temp panyimpenan. |
Simpen ing ngisor + 30 ° C. |
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Formulir |
Cairan |
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Werna |
Mbusak warna |
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PH |
7 (H2O, 20 ℃) |
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Kelarutan banyu |
Kesalahan |
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Jecfa Nomer |
220 |
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Brn |
80420 |
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Incipey |
Gaekpekojkcem-uhfffaoysa-n |
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Rujukan Database CAS |
108-29-2 (Rujukan Database CAS) |
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Cathetan Kimia NIST |
2 (3h) -furanone, Dihydro-5-Methyl- (108-29-2) |
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Sistem Registri EPA |
2 (3h) -furanone, Dihydro-5-Methyl- (108-29-2) |
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Kode Hazard |
Xi |
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Pernyataan Resiko |
36-36 / 37/38 |
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Pratelan safety |
39-26-37 / 39 |
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WGK Jerman |
2 |
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RTEK |
Lu3580000 |
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Tsca |
Ya |
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Kode hs |
29322980 |
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Properties Kimia |
Cairan tanpa warna. Tension permukaan 30 dynes / cm (25c), viskositas 2.18 cp (25c), ph (anhydrous): 7. PH (10% solusi ing banyu sulingan): 4.2. Salah karo banyu lan umume Pelarut organik, resin, lilin, lsp; Rasane miscibleWith Zein, Beeswax, petrolatum; ora bisa duwe gliserin, lem, lem, casein, Arab gum, lan protein kacang kedelai. Concustible. |
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Properties Kimia |
γ-valerolactone duwe ambu sing enak lan herbaceous. |
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Nggunakake |
Mandi pewarna (kopling Agen), cairan rem, nglereni minyak, lan minangka pelarut kanggo adesif, racun serangga, lan lacquer. |
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Preparation |
Kanthi nyuda Asam levulinik diikuti karo siklikasi. |
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Gambar Keamanan |
Beracun kanthi beracun ingestion. Gangguan kulit. Data Mutasi. Cairan sing bisa diobong nalika kapapar panas utawa nyala; bisa nanggepi bahan sing dioksidasi. Kanggo nglawan geni, Gunakake banyu, busa, CO2, bahan kimia garing. Nalika dipanaskan kanggo bosok kumelun akrid lan wasap sing ngganggu. |
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Metode pemurnian |
Ngresiki -lontone by repeated fractional distillation [Boorman & Linstead J Chem Soc 577, 580 1933]. Ir: Max 1790 (CS2), 1775 (Chcl3) CM-1 [Jones et al. Bisa J Ch Chem 3 7 2007 1959]. Distil sing kompleks bf3 ing 110-111o / 20mm [repupe et al. Justus Liebigs Ann Chach 596 179 1955]. Iki ditondoi kanthi konversi menyang -Yroxy-N-Valiride ing perawatan karo NH3, M 51.5-52o (kanthi penguapan alon saka solusi Chcl3). [BEILTEEIN 17 H 235, 17 Aku 131, 17 II 288, 17 III / IV 4176, 17/9 v 24.] |
|
Bahan mentah |
Asam asetoxyacetic -> Asam Levulinic |
