2-amino-4,6-dinitrophenol appears as dark red needles or prisms. Red crystals. Water insoluble. Explosive in the dry state but desensitized by wetting. Easily ignited and once ignited burn readily.
颜色/状态:
Dark red needles from alc, prisms from chloroform
闪点:
210 °C
分解:
When heated to decomposition it emits toxic fumes of nitroxides.
稳定性/保质期:
避免与氧化物接触。
计算性质
辛醇/水分配系数(LogP):
0.9
重原子数:
14
可旋转键数:
0
环数:
1.0
sp3杂化的碳原子比例:
0.0
拓扑面积:
138
氢给体数:
2
氢受体数:
6
ADMET
代谢
铜绿假单胞菌的一个菌株在无氧条件下将2,4,6-三硝基苯酚(苦味酸)还原为皮擦米酸。
A STRAIN OF P AERUGINOSA REDUCED 2,4,6-TRINITROPHENOL (PICRIC ACID) TO PICRAMIC ACID UNDER ANAEROBIC CONDITIONS.
Picric acid (2,4,6-trinitrophenol) is widely used ... The acute toxicity, distribution, and metabolism of picric acid were investigated using Fischer 344 rats. The LD50 for picric acid following oral dosing of male and female rats was established as 290 and 200 mg/kg, respectively. Blood gas analysis indicated severe acidosis during acute intoxication. Metabolism of picric acid was limited to reduction of nitro groups to amines. Metabolites isolated from urine included N-acetylisopicramic acid (14.8%), picramic acid (18.5%), N-acetylpicramic acid (4.7%), and unidentified components (2.4%). Approximately 60% of the parent picric acid was excreted unchanged. ...
Occupational hepatotoxin - Secondary hepatotoxins: the potential for toxic effect in the occupational setting is based on cases of poisoning by human ingestion or animal experimentation.
Nephrotoxin - The chemical is potentially toxic to the kidneys in the occupational setting.
Methemoglobinemia - The presence of increased methemoglobin in the blood; the compound is classified as secondary toxic effect
Other Poison - Uncoupler
Dermatotoxin - Skin burns.
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for shock and treat if necessary ... . Monitor for pulmonary edema and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes if immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal ... . Cover skin burns with dry sterile dressings after decontamination ... . Rapid body cooling may be necessary in case of hyperthermia. Salicylates are contraindicated. /Dinitrophenol and related compounds/
Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or in severe respiratory distress. Positive pressure ventilation techniques with a bag valve mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start an IV with lactated Ringer's to treat dehydration. Watch for signs of fluid overload and pulmonary edema. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors for hypotension with a normal fluid volume. Watch for signs of fluid overload ... . Consider drug therapy for pulmonary edema ... . Treat seizures with diazepam (Valium) ... . Administer 1% solution methylene blue if patient is symptomatic with severe hypoxia, cyanosis, and cardiac compromise not responding to oxygen. ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Dinitrophenol and related compounds/
The bioconcentration of metabolism of picric acid and picramic acid were determined for rainbow trout. The bioconcentration factor (BCF) in the epaxial muscle at 42 days for both of these compounds was < 1; the skin had a bioconcentration factor value of 1 and 9, respectively. The half-life elimination for the high and low dose of picric acid was 12.0 and 12.5 days, respectively; and for picramic acid was 9.0 and 9.5 days, respectively. In separate experiments, (14C)picric acid was metabolized to picramic acid, glucuronide conjugates and an unidentified group of compounds, and 42% of the (14C)picric acid was metabolized to picric acid, glucuronide conjugates and an unidentified group of compounds. The low bioconcentration in the trout muscle may be due to the trout's ability to excrete the parent compound and metabolites. The higher radioactivity observed on the skin may be due to the water route of exposure and the binding of the parent compounds to protein.
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
Compositions for oxidatively dyeing keratin fibers and methods for using such compositions
申请人:Lim Mu'Ill
公开号:US20070209123A1
公开(公告)日:2007-09-13
Compositions for dyeing keratin fibers comprise (a) at least one keratin dyeing compound selected from aromatic systems which comprise at least one boronic acid or boronic ester moiety and which are capable of forming upon oxidation a nucleophile or an electrophile, (b) at least one additional keratin dyeing compound selected from the group consisting of auxiliary developers and auxiliary couplers, and (c) a cosmetically suitable medium. Methods for oxidatively dyeing keratin fibers comprise the steps of applying such compositions in the presence of an oxidizing agent and rinsing the hair. A hair coloring product in kit form comprises a first separately packaged container comprising a composition as described above and a second separately packaged container comprising an oxidizing agent.
[EN] NEW COSMETIC COMPOSITIONS COMPRISING CATIONIC DYES AND PROCESS FOR DIRECT DYEING OF KERATIN FIBERS<br/>[FR] NOUVELLES COMPOSITIONS COSMÉTIQUES COMPRENANT DES COLORANTS CATIONIQUES, ET PROCÉDÉ DE COLORATION DIRECTE DE FIBRES DE KÉRATINE
申请人:ALFA PARF GROUP S P A
公开号:WO2014202152A1
公开(公告)日:2014-12-24
The present invention relates to new compositions for dyeing keratin fibers comprising, in a medium suitable for dyeing, one or more cationic dye of general formula (I) or (II), or a physiologically tolerated adduct thereof with an acid: (II), as well as to a process for dyeing keratin fibers comprising one or more cationic dye of general formula (I) or (II), or a physiologically tolerated adduct thereof with an acid.
A Common, Facile and Eco-Friendly Method for the Reduction of Nitroarenes, Selective Reduction of Poly-Nitroarenes and Deoxygenation of <i>N</i>
-Oxide Containing Heteroarenes Using Elemental Sulfur
作者:Angel H. Romero、Hugo Cerecetto
DOI:10.1002/ejoc.202000064
日期:2020.3.31
A facile and convenient protocol for the reduction of nitro‐arenes and deoxygenation of heteroarenes N‐oxides under transition metal and additive free conditions has been developed. The strategy allows the selective reduction of poly‐nitroarenes as well as the efficient deoxygetaion of a variety of N‐oxides containing heteroarenes including benzofuroxanes and phenzines with a broad substrate scope
Studies of the Absorption Spectra of Azo Dyes and their Metal-complexes. II. The Absorption Spectra of Phenolazoacetoacetamide and its Derivatives
作者:Yoshiharu Yagi
DOI:10.1246/bcsj.36.492
日期:1963.5
phenolic nucleus and a hydrazone group, and the D bands, in a conjugative electronic transition between a carboxylic acid anilide group and a hydrazone group. From the investigation of the series of spectra in phenolazoacetoacetbenzylamides, the B bands have been assigned to the conjugation band; they arise from a conjugative electronic transition within a partial chromophore consisting of an acetyl carbonyl
酚偶氮乙酰乙酰胺呈腙形式。酚羟基在固态和非极性溶剂中与腙氮原子形成分子内氢键。这些化合物的电子吸收光谱表现出四组特征谱带: A 谱带产生于涉及电子沿相应化合物整个共轭体系迁移的跃迁;C 带起源于酚核和腙基团之间的共轭电子跃迁,D 带起源于羧酸酰苯胺基团和腙基团之间的共轭电子跃迁。从对苯酚偶氮乙酰乙酰苄基酰胺的系列光谱的研究来看,B 带已被指定为共轭带;
[EN] DIRECT DYES AND COMPOSITION COMPRISING THE DYES<br/>[FR] COLORANTS DIRECTS ET COMPOSITION LES COMPRENANT
申请人:KAO GERMANY GMBH
公开号:WO2016102207A1
公开(公告)日:2016-06-30
The present invention relates to novel direct dyes and compositions comprising them for dyeing keratin fibers especially human hair. The novel dyes of the present invention have benzothiophene structure providing intensive and homogeneous dyeing on keratin fibers, especially human hair.