No exposure limit is set. On the basis of its
irritant properties, a ceiling limit of 2 mg/m3
(0.3 ppm) is recommended.
LogP:
1.6 at 25℃
物理描述:
Cumene hydroperoxide is a colorless to light yellow liquid with a sharp, irritating odor. Flash point 175°F. Boils at 153°C and at 100°C at the reduced pressure of 8 mm Hg. Slightly soluble in water and denser than water. Hence sinks in water. Readily soluble in alcohol, acetone, esters, hydrocarbons, chlorinated hydrocarbons. Toxic by inhalation and skin absorption. Used in production of acetone and phenol, as a polymerization catalyst, in redox systems.
颜色/状态:
Colorless to pale-yellow liq
蒸汽密度:
5 (NTP, 1992) (Relative to Air)
蒸汽压力:
3.27X10-3 mm Hg at 25 °C
自燃温度:
300 °F (USCG, 1999)
分解:
At concentrations of 91 and 95%, cumene hydroperoxide decomposed violently at about 150 °C.
Cumene hydroperoxide penetrates human red blood cells ... reduced by glutathione in the reaction catalyzed by glutathione peroxidase. Cumenol, water, and oxidized gluthathione were products.
Cumene hydroperoxide has known human metabolites that include (2S)-2-amino-5-[[(2R)-1-(carboxymethylamino)-1-oxo-3-(2-phenylpropan-2-ylperoxysulfanyl)propan-2-yl]amino]-5-oxopentanoic acid.
IDENTIFICATION AND USE: Cumene peroxide is a colorless to pale-yellow liquid. It is used in production of acetone and phenol; as polymerization catalyst, particularly in the redox systems, used for rapid polymerization. HUMAN STUDIES: Normal human epidermal keratinocytes undergo profound lipid oxidation with preference for phosphatidylserine followed by phosphatidylserine externalization upon exposure to cumene hydroperoxide. ANIMAL STUDIES: Application of 1-2 drops of cumene hydroperoxide (73%) to rabbit skin (circular area, 2 cm diameter) produced erythema, edema, and vesiculation within 2-3 days. 1 mg applied to the eye of rabbits caused redness of palpebral conjunctiva and chemosis. Skin carcinoma formed in DMBA/cumene peroxide-exposed mice in initiation/promotion study. Mutagenic activity of cumene hydroperoxide was observed in the Drosophila melanogaster test. Cumene hydroperoxide was evaluated for mutagenicity in the Salmonella microsome preincubation assay. Cumene hydroperoxide was tested in as many as 5 Salmonella typhimurium strains (TA1535, TA1537, TA97, TA98, and TA100) in the presence and absence of metabolic activation. Cumene hydroperoxide was positive in the Ames test with the last positive dose tested 33 ug/plate. ECOTOXICITY STUDIES: Toxic action of water pollutants was tested by measuring the immobilization of Daphnia magna, strain ircha. The mean effective concentration (EC50) for cumene hydroperoxide was less than 10 mg/L.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
暴露途径
这种物质可以通过吸入、皮肤接触和摄入被身体吸收。
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
吸入症状
喉咙痛。灼热感。咳嗽。呼吸困难。气短。症状可能延迟出现。
Sore throat. Burning sensation. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
皮肤症状
发红。疼痛。皮肤烧伤。
Redness. Pain. Skin burns.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
毒理性
眼睛症状
红肿。疼痛。严重烧伤。
Redness. Pain. Severe burns.
来源:ILO-WHO International Chemical Safety Cards (ICSCs)
吸收、分配和排泄
液态过氧化物可以通过皮肤吸收。/有机过氧化物/
Liquid peroxides can be absorbed through the skin. /Organic peroxides/
1.周国泰,化学危险品安全技术全书,化学工业出版社,1997 2.国家环保局有毒化学品管理办公室、北京化工研究院合编,化学品毒性法规环境数据手册,中国环境科学出版社.1992 3.Canadian Centre for Occupational Health and Safety,CHEMINFO Database.1998 4.Canadian Centre for Occupational Health and Safety, RTECS Database, 1989
AbstractPalladium‐catalyzed enantioselective C(sp3)−H functionalization reactions has attracted considerable attention due to its ability for the synthesis of enantiomerically enriched molecules and stimulation of novel retrosynthetic disconnections. Understanding the reaction mechanism, especially the stereochemical process of the reaction, is crucial for the rational design of more efficient catalytic systems. Previously, we developed a Pd(II)/sulfoxide‐2‐hydroxypridine (SOHP) catalytic system for asymmetric C(sp3)−H functionalization reactions. In this study, we focused on unraveling the chemistry of chiral palladacycles involved in the Pd(II)‐catalyzed enantioselective C(sp3)−H functionalization. We have isolated key palladacycle intermediates involved in the enantioselective β‐C(sp3)−H arylation of carboxylic acids catalyzed by the Pd(II)/SOHP system. These palladacycles, exhibiting ligand‐induced chirality, provided a significant opportunity to investigate the stereochemical process and the ligand effect in this asymmetric C−H functionalization. Our investigation provided direct evidence for the C−H palladation step as the enantioselectivity‐determining step, which forms diastereomeric palladacycles that exhibited preservation of chirality in the functionalization step. DFT calculations provided insights into the chiral induction in palladacycle formation. This work highlights the value of chiral palladacycle chemistry in offering mechanistic insights into the Pd(II)‐catalyzed asymmetric C(sp3)−H functionalization reactions.
N-ARYLAMIDINE-SUBSTITUTED TRIFLUOROETHYL SULFIDE DERIVATIVES AS ACARICIDES AND INSECTICIDES
申请人:BAYER CROPSCIENCE AG
公开号:US20140315898A1
公开(公告)日:2014-10-23
The present invention relates to novel N-arylamide-substituted trifluoroethyl sulfide derivatives of the formula (I)
in which X
1
, X
2
, X
3
, X
4
, R
1
, R
2
, R
3
, n have the meanings given in the description—to their use as acaricides and insecticides for controlling animal pests and to processes and intermediates for their preparation
SILANE COUPLING COMPOUNDS AND MEDICAL AND/OR DENTAL CURABLE COMPOSITIONS COMPRISING THE SAME
申请人:KABUSHIKI KAISHA SHOFU
公开号:US20190300552A1
公开(公告)日:2019-10-03
The present invention relate to a novel silane coupling agent and a medical and/or dental curable composition comprising the same. It is an object of the present invention to provide a novel silane coupling agent that imparts high affinity to a radical polymerizable monomer, thereby imparting high mechanical strength, flexibility and durability when used for a medical and/or dental curable composition, and an inorganic filler surface-treated with the novel silane coupling agent and a novel medical and/or dental curable composition. A silane coupling agent including repeating units such as a urethane bond and polyethylene glycol (ether bond) at a specific position is used.
[EN] PHOSPHONOOXY QUINAZOLINE DERIVATIVES AND THEIR PHARMACEUTICAL USE<br/>[FR] DERIVES DE PHOSPHONOOXY QUINAZOLINE ET LEUR UTILISATION PHARMACEUTIQUE
申请人:ASTRAZENECA AB
公开号:WO2004058781A1
公开(公告)日:2004-07-15
Quinazoline derivatives of formula (I) wherein A is 5-membered heteroaryl containing a nitrogen atom and one or two further nitrogen atoms; compositions containing them, processes for their preparation and their use in therapy.
[EN] OXIME ESTER PHOTOINITIATORS<br/>[FR] PHOTO-INITIATEURS À BASE D'ESTER D'OXIME
申请人:BASF SE
公开号:WO2021175855A1
公开(公告)日:2021-09-10
Disclosed are α-oxo oxime ester compounds based on carbazole derivatives which have specific substituent groups useful as a photoinitiator, as well as photopolymerizable compositions comprising said photoinitiator and ethylenically unsaturated compounds. The photopolymerizable compositions are useful, for example, in photoresist formulations for display applications, e.g. liquid crystal display (LCD), organic light emitting diode (OLED) and touch panel.
Substituted 1,3-thiazole compounds, their production and use
申请人:——
公开号:US20040053973A1
公开(公告)日:2004-03-18
(1) A 1,3-thiazole compound of which the 5-position is substituted with a 4-pyridyl group having a substituent including no aromatic group or (2) a 1,3-thiazole compound of which the 5-position is substituted with a pyridyl group having at the position adjacent to a nitrogen atom of the pyridyl group a substituent including no aromatic group has an excellent p38 MAP kinase inhibitory activity.