시트랄
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시트랄 속성
- 녹는점
- <-10°C
- 끓는 점
- 229 °C (lit.)
- 밀도
- 0.888 g/mL at 25 °C (lit.)
- 증기 밀도
- 5 (vs air)
- 증기압
- 0.2 mm Hg ( 200 °C)
- FEMA
- 2303 | CITRAL
- 굴절률
- n
20/D 1.488(lit.)
- 인화점
- 215 °F
- 저장 조건
- 2-8°C
- 용해도
- 0.42g/L
- 물리적 상태
- 액체
- 색상
- 무색~연황색
- 냄새
- 100.00%에서. 달콤한 레몬 시트랄
- ?? ??
- 감귤류
- 폭발한계
- 4.3-9.9%(V)
- 수용성
- 실질적으로 불용성
- Merck
- 14,2322
- JECFA Number
- 1225
- BRN
- 1721871
- 노출 한도
- ACGIH: TWA 5 ppm (Skin)
- 안정성
- 안정적인. 그러나 쉽게 이성질체화됩니다. 알칼리, 강산화제, 강산과 호환되지 않습니다. 타기 쉬운. 공기와 빛에 민감합니다.
- LogP
- 2.76 at 25℃
- CAS 데이터베이스
- 5392-40-5(CAS DataBase Reference)
- NIST
- Citral(5392-40-5)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xi | ||
---|---|---|---|
위험 카페고리 넘버 | 38-43 | ||
안전지침서 | 24/25-37 | ||
유엔번호(UN No.) | 1760 | ||
WGK 독일 | 1 | ||
RTECS 번호 | RG5075000 | ||
자연 발화 온도 | 225 °C | ||
TSCA | Yes | ||
HS 번호 | 2912 19 00 | ||
위험 등급 | 8 | ||
포장분류 | III | ||
유해 물질 데이터 | 5392-40-5(Hazardous Substances Data) | ||
독성 | LD50 orally in rats: 4.96 g/kg (Opdyke) | ||
기존화학 물질 | KE-11579 |
시트랄 C화학적 특성, 용도, 생산
순도시험
(1) 비중 : 이 품목의 비중은 0.885~0.891이어야 한다.
(2) 굴절률 : 이 품목의 굴절률 은 1.486~1.490이어야 한다.
(3) 용상 : 이 품목 1mL를 60% 에탄올 10mL에 녹일 때, 그 액은 징명하여야 한다.
(4) 산가 : 이 품목의 산가는 향료시험법 중 산가측정법에 따라 시험할 때, 5 이하이어야 한다.
확인시험
이 품목 1mL에 아황산수소나트륨시액 2mL 및 탄산나트륨시액 2방울을 가하여 흔들어 섞으면 발열하여 백색의 결정덩어리로 된다. 이에 아황산수소나트륨시액 10mL를 추가하여 수욕중에서 흔들어 섞으면서 가열하면 이 결정덩어리는 녹으며 레몬과 같은 향기는 없어진다.
정량법
이 품목 약 1g을 정밀히 달아 향료시험법 중 알데히드류 및 케톤류함량측정법의 히드록실아민법 제2법에 따라 정량한다. 다만 방치시간은 15분간으로 한다.
0.5N 염산 1mL = 76.12mg C10H16O
화학적 성질
Citral occurs as (2Z)- and (2E)-isomers (citral a and b, respectively) analogous to the corresponding alcohols, geraniol and nerol: geranial (citral a), bp2.7 kPa 118–119 °C, d20 0.8888, n20 D 1.4898; neral (citral b), bp2.7 kPa 120 °C, d20 0.8869, n20 D 1.4869. Natural citral is nearly always a mixture of the two isomers. It occurs in lemongrass oil (up to 85%), in Litsea cubeba oil (up to 75%), and in small amounts inmany other essential oils. The citrals are colorless to slightly yellowish liquids, with an odor reminiscent of lemon.Since citral is an α,β-unsaturated aldehyde with an additional double bond, it is highly reactive and may undergo reactions such as cyclization and polymerization. Geraniol, citronellol, and 3,7-dimethyloctan-l-ol can be obtained from citral by stepwise hydrogenation. Citral can be converted into a number of addition compounds; the (Z)- and (E)-isomers can be separated via the hydrogen sulfite addition compounds.The condensation of citral with active methylene groups is used on an industrial scale in the synthesis of pseudoionones, which are starting materials for ionones and vitamins.
출처
Reported found in apricot, clary sage, ginger, grape, grapefruit, lemon, lime, mandarin, orange, raspberry, tamarind, tangerine, tea and tomato.용도
Citral is an anti-microbial agent found in plants with antibacterial activity against some food pathogens. It is also a fragrance compound with a distinct lemon scent.정의
Commercial material is a mixture of α and β isomers.일반 설명
A clear yellow colored liquid with a lemon-like odor. Less dense than water and insoluble in water. Toxic by ingestion. Used to make other chemicals.공기와 물의 반응
Insoluble in water.반응 프로필
Citral is an aldehyde. Aldehydes are frequently involved in self-condensation or polymerization reactions. These reactions are exothermic; they are often catalyzed by acid. Aldehydes are readily oxidized to give carboxylic acids. Flammable and/or toxic gases are generated by the combination of aldehydes with azo, diazo compounds, dithiocarbamates, nitrides, and strong reducing agents. Aldehydes can react with air to give first peroxo acids, and ultimately carboxylic acids. These autoxidation reactions are activated by light, catalyzed by salts of transition metals, and are autocatalytic (catalyzed by the products of the reaction). The addition of stabilizers (antioxidants) to shipments of aldehydes retards autoxidation. Citral can react with alkalis and strong acids. Citral can readily isomerize.위험도
Questionable carcinogen.화재위험
Citral is combustible.색상 색인 번호
Citral is an aldehyde fragrance and flavoring ingredient, a blend of isomers cis (Neral) and trans (geranial). As a fragrance allergen, citral has to be mentioned by name in cosmetics within the EU.Safety Profile
Moderately toxic by intraperitoneal route. Mildly toxic by ingestion. Experimental reproductive effects. A severe human and experimental skin irritant. Mutation data reported. Combustible liquid. When heated to decomposition it emits acrid smoke and irritating fumes.시트랄 준비 용품 및 원자재
원자재
Synthetic citral
게라니올
Eucalyptus Citriodara Oil
Lemon leaf oil
바질오일
알파-도데실-오메가-히드록시-폴리옥시에틸렌
메틸(2-)-2-헵텐-6-온
리씨열매오일
리나롤
중아황산나트륨
아황산
레몬 기름
1-옥텐
마편초(베르베나오일)
Hotrienol
중탄산나트륨(중조)
네롤
레몬그라스잎오일
CITRUS LIMETTA OIL
에톡시에틴
준비 용품
시트로넬롤
요논(알파)
게라니올
DIHYDRO-BETA-IONONE
Allyl-α-ionone
3,7-Dimethyl-2,6-octadienenitrile
베타-다마세논
시트로넬랄
3-메틸-4-(2,6,6-트라이메틸-2-사이클로헥센-1-일)-3-뷰텐-2-온
레몬가루
하이드록시시트로넬랄
베타-아이온온
p-메틸 이오논
BETA-CYCLOCITRAL
3,7,11,15-테트라메틸-1-헥사데켄-3-올
네롤
4-(2,2-dimethyl-6-methylenecyclohexyl)-3-buten-2-one
이소데실알데히드
1,1-Diethoxy-3,7-dimethylocta-2,6-diene
이론
α-이오논
아이소메트헵텐
시트랄 공급 업체
글로벌( 569)공급 업체
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Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 |
sales1@chuanghaibio.com | China | 5882 | 58 |
Hebei Kingfiner Technology Development Co.Ltd | +86-15532196582 +86-15373005021 |
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Shandong Juchuang Chemical Co., LTD | +undefined15030412209 |
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JINING XINHE CHEMICAL CO., LTD | +8615318402391 |
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HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD | +8615383190639 |
admin@86-ss.com | China | 1000 | 58 |
Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 |
sales@capotchem.com | China | 29798 | 60 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21667 | 55 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +8618949832763 |
info@tnjchem.com | China | 2989 | 55 |
Shanghai Zheyan Biotech Co., Ltd. | 18017610038 |
zheyansh@163.com | CHINA | 3620 | 58 |