中文字幕在线观看一区二区三区|久久国产美女免费观看精品|久久国产精品三区色最新|四虎国产精品成人无码

Langfang Naco New Material(Chemical Reagent Department)
Professional production base of general chemical reagent and pharmaceutical accessories
Hotline:+86-15076659665
Products
Products
Urea

Urea

Molecular formula: CH4N2O
Molecular weight: 60.06
Properties: White column or white powder. Melting point is 132.7℃ (breaks down). Soluble in water, ethyl alcohol and benzene, slightly soluble in ether, insoluble in trichloromethane.
Uses: As analytical reagent and stabilzier. It can be used in organic synthesis.
Standard: The maximum content of impurities is in percentage content

Standard/item

Analytical pure-AR

Chemical pure-CP

Assay /%

≥99.0

≥99.0

Clarity test

Qualified

Qualified

Water insoluble matter/%

≤0.005

≤0.02

Ignition residue (Sulfate)

≤0.01

≤0.02

Chloride(Cl)

≤0.0005

≤0.001

Sulfate(SO4)

≤0.001

≤0.005

Ammonia (NH4)

≤0.005

≤0.005

Iron (Fe)

≤0.0002

≤0.0005

Heavy metal(Pb)

≤0.0002

≤0.0005

Biuret (C2H5N3O2)

≤0.2

≤0.4

Packing: Woven bag, kraft bag or fiber drum lined with plastic, net weight is 25kg.

Back

WeChat
Contact Us
Copyright (C) 2020, Langfang Naco new material Technology Co., LTD All Rights Reserved.Supported by ChemNet ChinaChemNet Toocle Copyright Notice
 
點擊這里給我發(fā)消息
客服一
點擊這里給我發(fā)消息
客服二
點擊這里給我發(fā)消息
客服三
 
 
 
 
安福县| 思茅市| 清远市| 新沂市| 平乐县| 太湖县| 天等县| 扶风县| 新田县| 宁陵县| 商城县| 仙居县| 高碑店市| 正宁县| 贺兰县| 金华市| 宽城| 芷江| 贵德县| 池州市| 合作市| 道真| 定日县| 沙雅县| 成武县| 芜湖县| 来宾市| 阿鲁科尔沁旗| 涟源市| 三明市| 康乐县| 桐乡市| 中方县| 理塘县| 广州市| 汉寿县| 安化县| 调兵山市| 铜川市| 重庆市| 徐水县|