알로신남산
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알로신남산 속성
- 녹는점
- 42°C
- 끓는 점
- 208.74°C (rough estimate)
- 밀도
- 1.0061 (rough estimate)
- 굴절률
- 1.5049 (estimate)
- 산도 계수 (pKa)
- 4.34±0.10(Predicted)
- 수용성
- 8.45g/L(25℃)
- LogP
- 2.412 (est)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
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| 유해·위험 문구: |
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| 예방조치문구: |
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알로신남산 C화학적 특성, 용도, 생산
정의
ChEBI: The Z (cis) isomer of cinnamic acidPurification Methods
The cis-acid is prepared by catalytic reduction of phenylpropiolic acid and after distillation in a high vacuum at ~95o it gives the most stable allo-isomer m 68o. Recrystallisation from pet ether yields Liebermann's iso-cinnamic acid m 58o . When the allo-acid (m 68o) is heated at 20o above its melting point in a sealed capillary for 0.5hours and allowed to cool slowly, Erlenmyer's iso-cinnamic acid m 4 2o is formed. This form can also be obtained in larger amounts by heating the allo-acid at 80o for 3hours, and on cooling it remains liquid for several weeks but gives the m 42o acid on innoculation with the crystals from the capillary tube. This form is unchanged in 6 weeks when kept in a dark cupboard. All three forms have the same pK values and the same rate of bromination. There is also a very labile form with m 32o. [Liebermann, Chem Ber 26 1572 1893, Claisen & Crismer Justus Liebigs Ann Chem 218 135 1883, Robinson & James J Chem Soc 1453 1933, Berthoud & Urech Helv Chim Acta 13 437 1930, McCoy & McCoy J Org Chem 33 2354 1968, Beilstein 9 IV 2001.]알로신남산 준비 용품 및 원자재
원자재
준비 용품
알로신남산 공급 업체
글로벌( 13)공급 업체
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