正丁基苯甲酸酯;
没有苯甲酸酯,苛刻的防腐剂或葡萄柚籽提取物。
No parabens, harsh preservatives or grapefruit seed extract.
不含染料,香水,羊毛脂,对羟基苯甲酸酯和甲醛。
本文报道了相转移催化条件下异成烯基苯甲酸酯的合成。
Synthesis of prenyl benzoate under phase transfer catalysis was reported.
安全有效,有利于有机护肤品无人工色素,合成香精或苯甲酸酯。
Safe effective, pro-organic body care without artificial colors, synthetic fragrances or parabens.
开发了一种用磷钨酸铝催化合成二甘醇二苯甲酸酯(DEDB)的新方法。
A novel preparation method to synthesize DEDB by using aluminium phosphotungstate catalyst was developed.
以间甲基苯甲酸和二甘醇为原料,钛酸四丁酯为催化剂合成了二乙二醇二间甲基苯甲酸酯。
Diethylene glycol binary m-methyl benzoate was synthesized with diethylene glycol and m-methyl benzoic acid in the presence of tetrabutyl titanate.
塞克硝唑苯甲酸酯是塞克硝唑的前药,本文主要对塞克硝唑苯甲酸酯的药理活性进行研究。
Secnidazole benzoate is a former drug of secnidazole, this paper mainly study on the pharmacological activity of secnidazole benzoate.
雌激素样物质:包括已知的化学物质对羟苯甲酸酯在内,常用于制作化妆品、防晒霜和保湿露。
Oestrogen-like substances, including chemicals known as parabens, occur in cosmetics, sun creams and moisturising lotions.
用于催化酯化合成二甘醇二苯甲酸酯增塑剂 ,处理后固体铌酸的催化活性和重复使用寿命有明显提高。
It was observed that the catalytic activity and the usable life of the treated niobic acid for synthesis of diethylene glycol dibenzoate was apparently higher than that of the untreated niobic acid.
两岁幼儿吸收(防腐剂)对羟基苯甲酸丙酯和对羟基苯甲酸丁酯类防腐剂的数量可能会产生类雌激素风险,导致内分泌系统障碍。
The amounts that two-year-olds absorb from the [preservative] parabens propylparaben and butylparaben can constitute a risk for oestrogen-like disruptions of the endocrine system.
最近的媒体报道,一批来自上海零度可乐原液中含有“对羟基苯甲酸甲酯”防腐剂,引发了大家对饮料安全性的关注。
Recent media reports that a batch of Coke Zero concentrate from Shanghai contained the banned preservative methyl-p-hydroxybenzoate sparked concern about the safety of beverages.
其中催化剂-苯甲酸丁烯酯手性加合物的生成是反应产物的手性决定步骤。
The turnover-limiting step for the asymmetric allylic oxidation is the formation of chiral catalyst-allyl perbenzoate complexes.
研究了过氧化苯甲酸叔丁酯合成废水中苯甲酸的回收方法。
Methods of recycling benzoic acid was studied from wastewater of preparing peroxide of tert-butyl benzoate.
上述条件下,苯甲酸丙酯的产率可达70.5%。
Under this conditions, the yield of propyl benzoate reached 70.5%.
上述条件下,苯甲酸异戊酯的产率可达83 3%。
Under this conditions, the yield of iso amyl benzoate reached 83.3%.
本文研究了温度和紫外光对食品防腐剂山梨酸、对羟基苯甲酸乙酯的稳定性和防霉效果的影响。
In this paper, the affects of temperature and ultraviolet light on the stability and mildewproof effect of sorbic acid and ethyl-p-hydroxybenzoate used as food preserving agent, was studied.
结果对硝基苯甲酸乙酯收率达98%,硫酸氢钠绝大部分以固体形式存在。
Results: the yield was over 98%, and most of the sodium bisulfate was in the solid form.
观察到使用苯甲酸苄酯洗液或氯菊酯的治疗妇女和对照组的妊娠结局没有显著差异。
No significant differences in pregnancy outcomes were observed between women treated with either BBL or permethrin and their matched controls.
采用于多相选择加氢方法由对甲氧基苯甲酸甲酯合成大茴香醛。
The present invention features the multiple phase selective hydrogenation process to synthesize anisic aldehyde with methyl methoxybenzoate.
一种对甲氧基苯甲酸甲酯选择加氢合成大茴香醛的方法,属于精细化工催化技术领域。
The present invention relates to selective hydrogenation process of methyl methoxybenzoate to synthesize anisic aldehyde, and belongs to the field of fine chemical catalysis technology.
在适宜的反应条件下,对羟基苯甲酸壳聚糖酯酯化度可达130%、得率80%以上。
Under optimum reaction conditions, esterification degree of para-hydroxybenzoate chitosan ester was 130%, and yield reached 80%.
它主要由苯甲酰氯和苯酚制备苯甲酸苯酯,然后重排、醚化所得。
It is based on phenol benzoate which is made from benzoyl chloride and phenol through rearrangement and etherification.
氢化苯甲酸甲酯和乙酯时,应用催化剂量多少,似对产量无影响,惟对氢化作用速度有关系。
The amount of catalyst used for the hydrogenation of methyl benzoate and ethyl benzoate did not affect the yields, but affected the speed of hydrogenation.
以对甲苯磺酸为催化剂,对二甲氨基苯甲酸和异丁醇为原料合成对二甲氨基苯甲酸异丁酯。
Isobutyl p-(dimethylamino) benzoate was synthesized by the esterification ofp-(dimethylamino)-benzoic acid with isobutanol using p-toluene sulfonic acid as the catalyst.
研究了以蔗糖酯及壳聚糖为涂膜剂,并配合防腐剂对羟基苯甲酸丙酯对青椒进行涂膜保鲜处理,观察青椒在贮藏期间亚硝酸盐含量的变化。
The preservation of green peppers by using sucrose ester, chitin and propyl-p-hydroxybenzoate was studied, and the nitrite content of green pepper during storage was analyzed.
研究了以蔗糖酯及壳聚糖为涂膜剂,并配合防腐剂对羟基苯甲酸丙酯对青椒进行涂膜保鲜处理,观察青椒在贮藏期间亚硝酸盐含量的变化。
The preservation of green peppers by using sucrose ester, chitin and propyl-p-hydroxybenzoate was studied, and the nitrite content of green pepper during storage was analyzed.
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