phosphorus pentoxide

The method is suited to determine the phosphorus pentoxide contents with the range of 5%~ 38% in phosphate ores.

适用于磷矿石中5%～38%五氧化二磷的测定。

Methods for chemical analysis of aluminium oxide& The molybdenum blue photometric method for the determination of phosphorus pentoxide content

GB/T6609.17-1986氧化铝化学分析方法钼蓝光度法测定五氧化二磷量

Determination of Phosphorus Pentoxide in Phosphate Ore by Bismuth Salt-molybdenum Blue Parallax Photometric Method

铋盐-钼蓝示差光度法测定磷矿石中五氧化二磷

Determination of Phosphorus Pentoxide Content in Carbonate Rocks by Spectrophotometry

分光光度法测定碳酸盐岩石中五氧化二磷的含量

A series of new type phosphate amphoteric surfactants were synthesized by using ethylene glycol, epichlorohydrin, alkyl tertiary amine and phosphorus pentoxide as raw materials.

以乙二醇、环氧氯丙烷、烷基叔胺和五氧化二磷为原料，合成了一种磷酸酯两性表面活性剂。

Note. ( 1) The dichloromethane is distilled from phosphorus pentoxide and stored over molecular sieves.

注意事项（1）二氯甲烷加入五氧化二磷蒸馏，加入分子筛储存。

Prachi Poly Products Ltd.-Manufacturer of phosphorus pentasulphide, phosphorus pentoxide, and food grade phosphoric acid.

绵阳天明磷化工有限公司主产黄磷 、 磷酸 、 及磷酸盐系列产品,下设磷酸盐公司.

Phosphorus-doped phenolic resin carbon was prepared by low temperature ( 700 ℃) pyrolysis of thermoplastic phenolic resin containing different amounts of phosphorus pentoxide after curing.

以添加不同含量五氧化二磷的热塑性酚醛树脂为前驱体，经热固化后升温至700℃裂解制备掺磷树脂裂解炭。

In the uniformity comparison of preparation p-n junction by phosphorus oxychloride diffusion and by phosphorus pentoxide sublimation, it is more uniformity that p-n junction preparation by phosphorus pentoxide sublimation.

三氯氧磷扩散与五氧化二磷升华制备p-n结的均匀性比较中，用五氧化二磷升华制备出的p-n结要更加均匀。

The structure and the acidic properties of H β zeolite were modified with phosphorus pentoxide added by using chemical vapour deposition method.

采用化学气相沉积法，研究了五氧化二磷对Hβ分子筛酸性和孔结构的改性。

Preparation p-n junction by phosphorus pentoxide sublimation, the most influence on square resistance is reaction time followed by flow and silicon reaction temperature, the least is phosphorus oxychloride diffusion.

五氧化二磷升华制备p-n结，对方块电阻影响最大的是反应时间，其次是气流量和硅片反应温度，P2O5升华温度影响较小。

Rapid Determination of Phosphorus Pentoxide in Extraction Paste by Acid-Base Titration

酸碱滴定法快速测定萃取料浆中五氧化二磷含量

Phosphorylation of high fatty alcohol with phosphorus pentoxide was studied with the aid of 31 P NMR spectrum.

采用31p NMR波谱对高碳脂肪醇与五氧化二磷的反应进行了研究，定量地表征了产物混合物中的各组分。

Include the following parts: 1. The hydroxyapatite with nano-crystalline structure was prepared by sol-gel method with mild conditions as the calcium nitrate tetrahydrate and phosphorus pentoxide used for raw materials.

主要包括以下几个内容：1.以四水硝酸钙和五氧化二磷为原料，采用实验条件比较温和的溶胶凝胶法制备具有一定结晶结构的纳米羟基磷灰石。