磷酸二钠

Methods: The content of 7-ACA raw material was determined on C18chromatographic column by using disodium hydrogen phosphate reagent.

用磷酸氢二钠试剂，在C18色谱柱上测定7-氨基头孢菌烷酸原料的含量。

WPA ; reaction ; crystallization ; food additive ; disodium hydrogen phosphate

本研究针对原料所含杂质、食品添加剂磷酸二氢钠得率问题以及生产

Disodium hydrogen phosphate anhydrous.

二钠氢 磷酸无水的应该对的。

Division Main chemicals products, palm wax, azo two different Western eyes, light calcium carbonate, talc yet, lithopone, zinc stearate, titanium dioxide, iron oxide Hongfen, carbon black powder, boron powder , Soda ash, protopine, Linsuansanna, sodium nitrite, metal cleaning agent tablets of activated carbon, paraffin, hydrogen peroxide, PAC, gypsum powder, stearic acid and other chemical products, the full range , Reliable, ensure credibility.

本部主营化工原料产品，有棕榈蜡、偶氮二异西睛、轻质碳酸钙、尚滑石粉、立德粉、硬脂酸锌、钛白粉、氧化铁红粉、碳黑粉、硼粉、纯碱、片碱、磷酸三钠、亚硝酸钠、金属清洁剂、活性碳粒、石蜡、双氧水、聚合氯化铝、石膏粉、硬脂酸等多种化工产品，品种齐全，质量可靠，信誉保证。

Objective To establish bacterial endotoxin test of Cytidine Disodium Triphosphate Injection instead of pyrogen method.

目的通过试验确定三磷酸胞苷二钠注射液细菌内毒素的具体检测方法。

Catalytic activities and regioselectivities of sodium dihydrogen phosphate for nitrations of toluene were investigated by gas chromatography.

研究了磷酸二氢钠催化甲苯硝化反应的催化活性，通过气相色谱考察了催化剂用量、反应时间、硝化反应温度及催化剂的重复使用等因素对甲苯转化率和产物区域选择性的影响。

It's quite suitable to be used in the analysis of related substances of cytidine disodium triphosphate.

适用于三磷酸胞苷二钠的有关物质的测定。

The Compound Disinfectant of Chlorinated Trisodium Phosphate contains adjuvantsphosphorus pentoxide and surfactant. It is white powder containing 3.44％ available chlorine.

氯化磷酸三钠复方消毒剂含辅助成分五氧化二磷与表面活性剂，为白色粉末，含有效氯3.44％。

RESULTS:In the Chenxiang Lubailu table,the identification of bismuthic salt positive result with dilute nitric acid instead of hydrochloric acid and the white precepitation formed in identification of magnesian was bismuth hydroxide sediments,it was easy and accurate to identify bismuthic salt by adding ascorbic acid.

结果：该片中的铋盐碘化钾鉴别反应，用稀硝酸代替盐酸做溶剂，呈正反应；镁盐氯化铵-磷酸氢二钠鉴别反应，加氨试液后，析出的白色沉淀不是Mg2，而是Bi3，该沉淀在氯化铵试液中不溶，干扰镁盐鉴别；铋盐含量测定项，用加抗坏血酸掩蔽剂的方法，排除Fe3+的干扰，使终点颜色稳定，易于准确判断。

Diabetes was induced by streptozotocin (55 mg/kg body wt by intraperitoned injection) which was dissolved in citric acid-phosphate buffer PH4. 4 and verified 24 hours later by the presence of hyperglycemia and hyperglycosuria.

糖尿病模型制备方法按55mg／kg STZ剂量向大鼠腹腔内一次性注射链脲佐菌素（Streptozotocin，STZ），STZ予先溶于PH4.4的柠檬酸—磷酸氢二钠缓冲液中，制成浓度为20mg／ml溶液。24h后测尿糖和血糖，尿糖在+++和++++，血糖在16mmol／l以上者确定为糖尿病。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。