산화 메시틸
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산화 메시틸 속성
- 녹는점
- −53 °C(lit.)
- 끓는 점
- 129 °C(lit.)
- 밀도
- 0.858 g/mL at 25 °C(lit.)
- 증기압
- 10.5 hPa (20 °C)
- 굴절률
- n
20/D 1.442(lit.)
- 인화점
- 87 °F
- 저장 조건
- Store below +30°C.
- 용해도
- 30g/L
- 물리적 상태
- 액체, 부유 물질 없음
- 색상
- 투명한
- Specific Gravity
- 0.86
- 냄새
- 강한; 박하; 꿀 같은.
- 폭발한계
- 1.4-10.1%(V)
- ?? ??
- 채소
- 수용성
- 28g/L(20℃)
- Merck
- 14,5908
- JECFA Number
- 1131
- BRN
- 1361550
- Henry's Law Constant
- (x 10-6 atm?m3/mol): 4.01 at 20 °C (approximate - calculated from water solubility and vapor pressure)
- 노출 한도
- TLV-TWA 60 mg/m3 (15 ppm) (ACGIH), 10-h TWA 40 mg/m3 (10 ppm) (NIOSH); STEL 100 mg/m3 (25 ppm); IDLH 5000 ppm.
- Dielectric constant
- 15.4(20℃)
- 안정성
- 감광성
- LogP
- 1.37 at 20℃
- CAS 데이터베이스
- 141-79-7(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn | ||
---|---|---|---|
위험 카페고리 넘버 | 10-20/21/22-36/37/38 | ||
안전지침서 | 25 | ||
유엔번호(UN No.) | UN 1229 3/PG 3 | ||
OEB | A | ||
OEL | TWA: 10 ppm (40 mg/m3) | ||
WGK 독일 | 1 | ||
RTECS 번호 | SB4200000 | ||
자연 발화 온도 | 344 °C | ||
TSCA | Yes | ||
HS 번호 | 2914 19 90 | ||
위험 등급 | 3 | ||
포장분류 | III | ||
유해 물질 데이터 | 141-79-7(Hazardous Substances Data) | ||
독성 | LD50 in mice (mg/kg): 710 ±85 intragastric; LC50 in mice (2 hr), rats (4 hr) (mg/m3): 10000 ±270, 9000 ±600 (Ismerov) | ||
IDLA | 1,400 ppm [10% LEL] | ||
기존화학 물질 | KE-24767 |
산화 메시틸 C화학적 특성, 용도, 생산
개요
The commercial grade of 4-methyl-3-penten-2-one exhibits an unpleasant grassy-green or pungent, acrylic odor. The pure material has a pleasant, honey-like odor. This substance may be prepared by reacting acetone or diacetone alcohol with iodine or other dehydrating agent; by condensation of acetone over sulfonated polystyrene-divinylbenzene resin used as an ion exchange catalyst.화학적 성질
Mesityl oxide is a clear, pale yellow, or colorless liquid with a strong peppermint odor. The odor threshold is 0.05 ppm.물리적 성질
Clear, pale yellow liquid with a strong, peppermint, or honey-like odor. Experimentally determined detection and recognition odor threshold concentrations were 70 μg/m3 (17 ppbv) and 200 μg/m3 (50 ppbv), respectively (Hellman and Small, 1974).출처
Reported found in orange juice, baked potato, bell pepper, sauerkraut, tomato, crisp bread, parmesan cheese, milk, chicken fat, hop oil, rum, coffee, tea, peanut, passion fruit, mushroom, tamarind, prickly pear, buckwheat, basil, elder flower, rosemary, shrimp, nectarine, clam and maté용도
4-Methyl-4-penten-2-one is used to a small extent as an intermediate in synthesis. Most of it is converted to 4-methyl-2-pentanone by selective hydrogenation. Although 4-methyl-2- pentanone has excellent solvent properties for nitrocellulose, cellulose esters and ethers, copolymers of vinyl chloride – vinyl acetate and other synthetic resins, as well as natural and synthetic rubber, its use as a solvent is limited as a result of its toxicity and chemical instability. The fraction of 4-methyl-4-penten-2-one permitted in solvent systems has been set at 5 vol% (Rule 66 of the Los Angeles, California, Air Pollution Control District). Some of the numerous possible reactions that mesityl oxide may undergo have been used for the synthesis of products such as Budralazine, an antihypertensive agent.제조 방법
4-Methyl-4-penten-2-one is the precursor of methyl isobutyl ketone (see Section 2.2) and can be produced from acetone in a single- or a two-step process . Pure mesityl oxide is obtained by azeotropic distillation of the crude watercontaining product. Subsequent purification by removal of the accompanying impurities, such as mesitylene and phorone [504-20-1], is effected by distillation.일반 설명
Mesityl oxide appears as a colorless, oily liquid with a pungent honey-like odor. Flash point 87 °F. Less dense than water and slightly soluble in water. Vapors heavier than air. Used in paint removers, as a solvent for plastics, and as an insect repellent.공기와 물의 반응
Highly flammable. Slightly soluble in water반응 프로필
Mixing MESITYL OXIDE in equal molar proportions with any of the following substances in a closed container caused the temperature and pressure to increase: 2-aminoethanol, chlorosulfonic acid, ethylene diamine, nitric acid, oleum, or sulfuric acid [NFPA 1991].위험도
Flammable, moderate fire risk. Toxic by ingestion, inhalation, and skin absorption. Eye and upper respiratory tract irritant, central nervous system impairment.건강위험
Mesityl oxide is a moderately toxic substance, more toxic than the saturated ketones.Inhalation of its vapors can cause irritationto the eyes, skin, and mucous membranes. Inhumans, the irritation effect on the eyes andnose are reported to be 25 and 50 ppm. Athigh concentrations narcosis can result. Otherthan narcosis, prolonged exposure to highconcentrations can injure the lungs, liver, and kidney. A concentration of 2500 ppm waslethal to rats.LD50 value, oral (rats): 1120 mg/kg.
화재위험
Behavior in Fire: Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.Safety Profile
Poison by intraperitoneal route. Moderately toxic by ingestion. Mildly toxic by inhalation and skin contact. Human systemic effects by inhalation: conjunctiva irritation. This compound is highly irritating to all tissues on contact; its vapors also are irritating. High concentrations are narcotic. It is readdy absorbed through intact skin. Single exposures tend to indicate that ths ketone has greater acute and narcotic action than isophorone. It can have harmful effects upon the hdneys and liver, and may damage the eyes and lungs to a serious degree. Prolonged exposure can injure liver, kidneys, and lungs. It can cause opaque cornea, keratoconus, and extensive necrosis of cornea. Dangerous fire hazard when exposed to heat, sparks, or flame; can react with oxidzing materials. Reacts violently with 2-amino ethanol, chlorosulfonic acid, ethylene diamine, HNO3, oleum, H2SO4. An insect repellent. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also KETONES.잠재적 노출
Mesityl oxide is used as a solvent for cellulose esters and ethers and other resins in lacquers and inks. It is used in paint and varnish removers and as an insect repellent운송 방법
UN1229 Mesitly oxide, Hazard Class: 3; Labels: 3-Flammable liquid.Purification Methods
Purify it by distillation, preferably in a vacuum or via the semicarbazone (m 165o) which is decomposed to pure ketone. The 2,4-dinitrophenylhydrazone (m 205-206o) crystallises from EtOH. [Johnson J Am Chem Soc 73 5888 1951, Johnson J Am Chem Soc 75 2720 1953, Erskine & Waight J Chem Soc 3425 1960, Beilstein 1 H 736, 1 I 382, 1 II 793, 1 III 2995, 1 IV 3471.]비 호환성
May form explosive mixture with air. May be able to form explosive peroxides. May react violently with nitric acid; aliphatic amines; alkanolamines, 2- aminoethanol, ethylene diamine; chlorosulfonic acid; oleum (fuming sulfuric acid). Not compatible with oxidizers, strong acids; strong bases; reducing agents; halogens. Dissolves some forms of plastics, resins and rubber. Attacks copper.폐기물 처리
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.산화 메시틸 준비 용품 및 원자재
원자재
디아세톤알코올
디이소부틸케톤
4-Methyl-3-penten-2-one oxime
2-Pentanone, 4-chloro-4-methyl-
3,4-에폭시-4-메틸펜탄-2-온
2-Heptanone, 4-hydroxy-
4-메틸-4-(메틸니트로소아미노)-2-펜탄온
4-METHYL-3-PENTEN-2-OL
에톡시퀸
p-펜네티딘
Cyclopropane, 2-bromo-1,1-dimethyl-3-methylene-
준비 용품
산화 메시틸 공급 업체
글로벌( 284)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Shanxi Naipu Import and Export Co.,Ltd | +86-13734021967 +8613734021967 |
kaia@neputrading.com | China | 1011 | 58 |
Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 |
sales1@chuanghaibio.com | China | 5895 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21663 | 55 |
Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 |
jack.li@time-chemicals.com | China | 1807 | 55 |
Hangzhou FandaChem Co.,Ltd. | 008657128800458; +8615858145714 |
fandachem@gmail.com | China | 9284 | 55 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
sales@coreychem.com | China | 29888 | 58 |
SHANDONG ZHI SHANG CHEMICAL CO.LTD | +86 18953170293 |
sales@sdzschem.com | China | 2931 | 58 |
Hubei Jusheng Technology Co.,Ltd. | 18871490254 |
linda@hubeijusheng.com | CHINA | 28180 | 58 |
Henan Xiangtong Chemical Co., Ltd. | 86-371-61312303 |
info@hnxtchem.com | CHINA | 292 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22968 | 58 |
산화 메시틸 관련 검색:
트리스(2,4,6-트리메틸페닐)포스핀 3,5-다이메틸-2-사이클로헥센-1-온 3-메틸-2-시클로헥센-1-온 아이소포론 듀로퀴논 2,3-디클로로-5,6-디시아노-1,4-벤조퀴논 메틸-파라-벤조퀴논 트리메시틸보란 테트라페닐 시클로펜타디엔온 시스쟈스몬
Isovanillin
Isoniazid
Isophytol
3-methylcyclopent-2-en-1-one
2,5-DIPHENYL-P-BENZOQUINONE
2,3-Dimethoxy-5-methyl-p-benzoquinone
4-Methyl-3-penten-2-one (phthalazin-1-yl)hydrazone
THYMOQUINONE