No data are available in humans. Inadequate evidence of carcinogenicity in animals. OVERALL EVALUATION: Group 3: The agent is not classifiable as to its carcinogenicity to humans.
来源:Hazardous Substances Data Bank (HSDB)
毒理性
致癌物分类
国际癌症研究机构致癌物:2,5-二氨基甲苯
IARC Carcinogenic Agent:2,5-Diaminotoluene
来源:International Agency for Research on Cancer (IARC)
毒理性
致癌物分类
国际癌症研究机构(IARC)致癌物分类:第3组:无法归类其对人类致癌性
IARC Carcinogenic Classes:Group 3: Not classifiable as to its carcinogenicity to humans
来源:International Agency for Research on Cancer (IARC)
IARC Monographs:Volume 16: (1978) Some Aromatic Amines and Related Nitro Compounds – Hair Dyes, Colouring Agents and Miscellaneous Industrial Chemicals
来源:International Agency for Research on Cancer (IARC)
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.
Methemoglobinemia - The presence of increased methemoglobin in the blood; the compound is classified as secondary toxic effect
Skin Sensitizer - An agent that can induce an allergic reaction in the skin.
来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
A 50-mL solution composed of a typical hair dye formulation and water was used to suspend 1.4 g of toluene-2,5-diamine. The gel was applied to the abdominal skin of dogs for 3 hours (the number of dogs was not specified). The amount of toluene-2,5-diamine absorbed into the blood was determined using the Schiff base method. During the 3-hour exposure, the concentration of toluene-2,5-diamine increased to 1 mg/mL of blood. The concentration increased more rapidly during the later stage of the experiment than during the earlier stage. After the gel was removed and the area washed, the concentration in the blood decreased slowly. To determine the amount of toluene-2,5-diamine that had been absorbed through the skin, the absorption was imitated by a continuous intravenous infusion of toluene-2,5-diamine. An infusion of 0.022 mg of toluene-2,5-diamine per kilogram per minute was administered for 3 hours. During the first 2 hours, the concentration in the blood was greater than that seen in the absorption experiments; after 3 hours of infusion, the concentrations were the same. Because each dog weighed approximately 10 kg, it was calculated that 40 mg of toluene-2,5-diamine had been infused over the 3-hour period. Thus, it was assumed that the same amount was absorbed through the skin of the dogs in 3 hours.
In a ... series of studies regarding the amount of toluene-2,5-diamine absorbed in the blood and excreted in the urine, the addition of 3% hydrogen peroxide reduced absorption of toluene-2,5-diamine. After a 3-hour cutaneous exposure to a gel containing 3% hydrogen peroxide and 1.4 mg of toluene-2,5-diamine, no toluene-2,5-diamine was detected in the blood of dogs. An intravenous infusion of 0.0015 mg of toluene-2,5-diamine per kilogram of body weight per minute for 3 hours produced a detectable concentration of toluene-2,5-diamine. Thus, the absorption through the skin was less than 3 mg. Absorption of toluene-2,5-diamine was proved by the detection of small amounts (60-70 mg) in the urine.
A simple hair dye containing 2.5 g of toluene-2,5-diamine was applied to the hair and scalp of 5 human subjects for 40 minutes. Because humans excrete toluene-2,5-diamine as N,N'-diacetyl-p-toluenediamine (N,N'-dpt) rather than as a free amine, ethyl acetate, instead of chloroform, was used as the solvent for extracting this compound from the urine. The greatest rate of excretion was observed during the 5- to 8-hour period following the dyeing. On average, the total amount of N,N'-dpt excreted was 3.66 mg, which is equivalent to 2.17 mg of toluene-2,5-diamine.
To estimate the amount of toluene-2,5-diamine absorbed from the amount of the N,N'-dpt found in the urine, N,N'-dpt concentrations were determined using the same methods after subcutaneous injection of a known amount of toluene-2,5-diamine. Three women and 3 men were injected with 2.6 mL of a solution containing 5.54 mg of toluene-2,5-diamine. The rate of excretion was highest during the first few hours after the injection. An average of 4.5 mg of N,N'-dpt, or more specifically, 2.64 mg of toluene-2,5-diamine, was isolated from the urine; thus, 47.6% of the injected dose was excreted as N,N'-dpt. The authors calculated that 4.6 mg of toluene-2,5-diamine was either absorbed during the dyeing process or liberated in vivo from a compound formed during the preparation of the hair dye and absorbed through the skin.
Diamine Compound Having Phosphorylcholine Group, Polymer Thereof, and Process for Producing the Polymer
申请人:Nagase Yu
公开号:US20100036081A1
公开(公告)日:2010-02-11
Highly polymerizable diamine compounds having a phosphorylcholine group are disclosed. High-molecular weight polymers are obtained from the highly polymerizable diamine compound having a phosphorylcholine group as a monomer, and the polymers have improved mechanical strength, water resistance and heat resistance while maintaining excellent biocompatibility and processability of MPC polymers. Processes for producing the polymers are disclosed. The diamine compounds having a phosphorylcholine group are represented by Formula (I). The polymers contain at least 1 mol % of a specific structural unit with a phosphorylcholine group represented by Formula (II) and have a number average molecular weight of not less than 5,000. In the processes, the diamine compound is used as a monomer.
[EN] NEW CATIONIC DYES, KITS AND COMPOSITIONS THEREOF, AND PROCESS FOR DYEING KERATIN FIBERS<br/>[FR] NOUVEAUX COLORANTS CATIONIQUES, KITS ET COMPOSITIONS LES CONTENANT, ET PROCÉDÉ DE TEINTURE DE FIBRES KÉRATINIQUES
申请人:ALFA PARF GROUP S P A
公开号:WO2014202150A1
公开(公告)日:2014-12-24
The present invention relates to new cationic dyes of general formula (I) and (II): The invention also relates to kits and compositions for dyeing keratin fibers, which contain at least one of these dyes as well as to a process for dyeing keratin fibers using at least one of these dyes.
Gold nanoparticlessupported on polyionic‐liquidmagneticnanoparticles (MNP@PIL@Au) were synthesized by reduction of HAuCl4 with sodium borohydride. The synthesized catalyst was characterized using by AAS, TEM, FT‐IR, EDS, TGA and XRD techniques. The performance of the synthesized catalyst was investigated in the reduction of nitroarenes with NaBH4. The reaction was carried out for various nitroarenes
A hair coloring composition comprising: (a) from about 0.0003 moles (per 100 g of composition) to less than about 0.09 moles (per 100 g of composition) of an inorganic peroxygen oxidizing agent; and (b) an oxidative hair coloring agent; wherein the pH of each of (a) and (b) is in the range of from about 1 to about 6 and wherein the combined mixture of (a) and (b) has a pH in the range of from about 1 to about 6. The products can provide excellent hair coloring and in-use efficacy benefits including excellent initial color and good wash fastness in combination with reduced hair damage at low pH.
A hair colouring and conditioning composition comprising:
(a) a hair colouring agent; and
(b) a hair conditioning agent;
wherein the composition provides an Average Combing Index Value of greater than 1.2 as measured by the Combing Technical Test Method.
The products can provide excellent hair colouring together with excellent conditioning, reduced hair damage, brittleness and dryness, and is convenient and easy to use.