시트로넬랄
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시트로넬랄 속성
- 녹는점
- -16°C (estimate)
- 알파
- D25 +11.50°
- 끓는 점
- 207 °C(lit.)
- 밀도
- 0.857 g/mL at 25 °C(lit.)
- 증기압
- 14 hPa (88 °C)
- FEMA
- 2307 | CITRONELLAL
- 굴절률
- n
20/D 1.451(lit.)
- 인화점
- 169 °F
- 저장 조건
- Store below +30°C.
- 용해도
- 클로로포름(수용성), 메탄올(소량으로 용해)
- 물리적 상태
- 액체
- Specific Gravity
- 0.858 (20/4℃)
- 색상
- 맑은 연한 노란색
- 수소이온지수(pH)
- 7 (H2O)
- 냄새
- 디프로필렌 글리콜 중 10.00%. 달콤한 드라이 꽃무늬 허브 밀랍 알데히드 감귤류
- ?? ??
- 꽃향기
- 생물학적 소스
- synthetic
- 폭발한계
- 1.2-4.5%(V)
- 수용성
- 물과 에탄올과 약간 섞입니다.
- 감도
- Air Sensitive
- Merck
- 14,2329
- JECFA Number
- 1220
- BRN
- 1720789
- 안정성
- 흡습성
- InChIKey
- NEHNMFOYXAPHSD-UHFFFAOYSA-N
- LogP
- 3.62 at 25℃
- CAS 데이터베이스
- 106-23-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn,Xi,N | ||
---|---|---|---|
위험 카페고리 넘버 | 38-43-51/53-36/37/38-22 | ||
안전지침서 | 36/37-61-37/39-26-36 | ||
유엔번호(UN No.) | UN 3082 9/PG 3 | ||
WGK 독일 | 3 | ||
RTECS 번호 | RH2140000 | ||
F 고인화성물질 | 8 | ||
자연 발화 온도 | 202 °C | ||
TSCA | Yes | ||
HS 번호 | 29121900 | ||
유해 물질 데이터 | 106-23-0(Hazardous Substances Data) | ||
독성 | LD50 orally in Rabbit: 2420 mg/kg LD50 dermal Rabbit > 2500 mg/kg | ||
기존화학 물질 | KE-11656 |
시트로넬랄 C화학적 특성, 용도, 생산
순도시험
(1) 비중 : 이 품목의 비중은 0.850~0.860이어야 한다.
(2) 굴절률 : 이 품목의 굴절률 은 1.446~1.456이다.
(3) 용상 : 이 품목 1mL를 70% 에탄올 5mL에 녹일 때, 그 액은 징명하여야 한다.
(4) 산가 : 이 품목의 산가는 향료시험법 중 산가측정법에 따라 시험할 때, 3 이하이어야 한다.
확인시험
이 품목 1mL에 아황산수소나트륨시액 2mL 및 탄산나트륨시액 2방울을 넣어 흔들어 섞으면 발열하며 백색의 결정성 덩어리로 된다. 이에 아황산수소나트륨시액 10mL를 넣고 수욕중에서 흔들어 섞으면서 가열하면 이 결정성 덩어리는 녹는다.
정량법
이 품목 약 1.1g을 정밀히 달아 향료시험법 중 알데히드류 및 케톤류함량측정법의 히드록실아민법 제2법에 따라 시험한다. 다만, 방치시간은 1시간으로 한다.
0.5N 염산 1mL = 77.13mg C10H18O
화학적 성질
(?)-Citronellal occurs in Java citronella oil at a concentration of 35%. Racemic citronellal is the main constituent of E. citriodora oil with a content of up to 85%.Pure citronellal is a colorless liquid with a refreshing odor, reminiscent of lemon balm. Upon catalytic hydrogenation, citronellal yields dihydrocitronellal, citronellol, or dihydrocitronellol, depending on the reaction conditions. Protection of the aldehyde group, followed by addition of water to the double bond in the presence of mineral acids or ion-exchange resins results in the formation of 3,7-dimethyl-7-hydroxy-octan-l-al (hydroxydihydrocitronellal). Acid-catalyzed cyclization to isopulegol is an important step in the synthesis of (?)-menthol.
출처
The d-form of citronellal has been reported in the oil of citronella (Ceylon, Jammus, Kaschmis), in the oil from leaves of Barosma pulchella, in the oil from roots of Phebalium nudum and in the oils of Eucalyptus citriodora, Leptospermum citratum and Baeckea citriodora. The /-form is present in the oils of Backhousia citriodora var. A, E. citriodora, Litsea cubeba (fruits) and lemongrass. Citronellal is generally present also in the oils of lemon, mandarin, Lavandula delphinensis, Ocimum canum f. citrata and many others (Fenarolis Handbook of Flavor Ingredients, 1971).용도
rac-Citronellal is a monoterpenoid and the major isolate in citronella oil. Citronella oil is an essential oil bearing insecticidal properties. rac-Citronellal is also often used as a fragrance ingred ient.제조 방법
Citronellal is still isolated from essential oils in considerable quantities; it is also produced synthetically.1) Isolation from essential oils:(+)-Citronellal is obtained from citronella oils by fractional distillation. Racemic citronellal is isolated from E. citriodora oil; when necessary, it is purified by using an addition compound, for example, the bisulfite derivative.
2) Synthesis from geraniol or nerol: Racemic citronellal can be obtained by vaporphase rearrangement of geraniol or nerol in the presence of, for example, a barium-containing copper–chromium oxide catalyst.
3) Synthesis from citronellol: Racemic citronellal can also be obtained by dehydrogenation of citronellol under reduced pressure with a copper chromite catalyst.
4) Synthesis from citral: Selective hydrogenation of citral to citronellal can be accomplished in the presence of a palladium catalyst in an alkaline alcoholic reaction medium. A continuously operating process for the hydrogenation on a palladium catalyst in the presence of trimethylamine has been developed.
5) Synthesis from myrcene: (+)- and (?)-Citronellal are available from myrcene via geranyldiethylamine, which is enantioselectively isomerized to (+)- or (?)-citronellalenamine. Hydrolysis yields pure (+)- or (?)-citronellal; see monograph menthol.
정의
ChEBI: A monoterpenoid, the main component of citronella oil which gives it its distinctive lemon aroma.Essential oil composition
Citronella oil contains a number of fragrant fractions of which citronellal, geraniol and citronellol are the major components. Ceylon citronella oil contains 55 to 65% total acetylizable alcohols (calculated as citronellol) and 7 to 15% total aldehyde (calculated as citronellal). The main constituents are geraniol (18 to 20%), citronellol (6.4 to 8.4%), citronellal (5 to 15%), geranyl acetate (2%); limonene (9 to 11%) and methyl isoeugenol (7.2 to 11.3%). Other constituents are camphene, caryophyllene, linalool, citral (neral and geranial), methylheapenone, methyleugenol, l-borneol, nerol, eugenol and farnesol.* Java citronella oil contains not less than 35% alcohols (calculated as citronellol) and not less than 35% aldehydes (calculated as citronellal). The Java type appears to have higher concentrations of citronellol (35%) and geraniol (21%) than does the Ceylon type (citronellol 10% and geraniol 18%).일반 설명
(±)-Citronellal was studied for its fumigant antifungal activity against Pyricularia (Magnaporthe) grisea.신진 대사
Feeding 50 g citronellal to rabbits was followed by the isolation of 13 g of a crystalline glucuronide, which proved to be p-menthane-3.8-diol-D-glucuronide. The citronellal appeared to have been cyclized and the glucuronide obtained was identical with that obtained on feeding p-menthane-3,8-diol (menthoglycol) (Kühn & Low, 1938). However, evidence was produced to show that the cyclization was not, strictly speaking, a biological reaction, but a chemical one which took place in the stomach under the influence of the gastric hydrochloric acid. The conjugation of the menthoglycol with glucuronic acid was, of course, a purely biological reaction. It was found that on shaking 20 g citronellal with 200 ml 0-5% HCl for 48 hr at 37 C, 12 g menthoglycol was formed (Kühn & Low, 1938).시트로넬랄 준비 용품 및 원자재
원자재
준비 용품
시트로넬랄 공급 업체
글로벌( 462)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Hebei Weibang Biotechnology Co., Ltd | +8615531157085 |
abby@weibangbio.com | China | 8805 | 58 |
Hebei Mujin Biotechnology Co.,Ltd | +86 13288715578 +8613288715578 |
sales@hbmojin.com | China | 12830 | 58 |
Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 |
sales1@chuanghaibio.com | China | 5888 | 58 |
Hebei Weibang Biotechnology Co., Ltd | +8617732866630 |
bess@weibangbio.com | China | 18147 | 58 |
Hebei Kingfiner Technology Development Co.Ltd | +86-15532196582 +86-15373005021 |
lisa@kingfinertech.com | China | 3007 | 58 |
Apeloa production Co.,Limited | +8619933239880 |
admin@apcl.com.cn | China | 861 | 58 |
Hebei Zhuanglai Chemical Trading Co.,Ltd | +8613343047651 |
admin@zlchemi.com | China | 3692 | 58 |
Shandong Deshang Chemical Co., Ltd. | +86-0531-8875-2665 +8613153039501 |
info@deshangchem.com | China | 662 | 58 |
JINING XINHE CHEMICAL CO., LTD | +8615318402391 |
sales@xinhepharma.com | China | 809 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21632 | 55 |