危险品英文缩写cas

1。 CAS no. (number): 不是危险品而已， 而是所有的化学品都有的一个编号， 便于数据库的查找。CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. They are also referred to as CAS numbers or CAS RNs. Chemical Abstracts Service (CAS), a division of the American Chemical Society, assigns these identifiers to every chemical that has been described in the literature. The intention is to make database searches more convenient, as chemicals often have many names. Almost all molecule databases today allow searching by CAS number. As of Nov 2, 2005, there were 26,901,696 substances in the CAS registry — the current number is published here. About 4,000 new numbers are added each day. CAS registry number is separated by hyphens into three parts, the first consisting of up to 6 digits, the second consisting of two digits, and the third consisting of a single digit serving as a check digit.2。 UN no. 才是危险品特有的。 运输都要有这号码。UN numbers or UN IDs are four-digit numbers that identify dangerous goods hazardous substances and articles (such as explosives, flammable liquids, toxic substances, etc.) in the framework of international transport. Some hazardous substances have their own UN numbers (e.g. acrylamide has UN2074), while sometimes groups of chemicals or products with similar properties receive a common UN number (e.g. flammable liquid, not otherwise specified, have UN1993). A chemical in its solid state may receive a different UN number than the liquid phase if their hazardous properties differ significantly; substances with different levels of purity may also receive different UN numbers. UN numbers range from UN0001 to about UN3500 and are assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods. They are published as part of their Recommendations on the Transport of Dangerous Goods, also known as the Orange Book. These recommendations are adopted by the regulatory organization responsible for the different modes of transport. NA numbers (North America), also known as DOT numbers are issued by the United States Department of Transportation and are identical to UN numbers, except that some substances without a UN number may have an NA number. These additional NA numbers use the range NA8000 - NA9999. Associated with each UN number is a hazard identifier, which encodes the general hazard class and subdivision (and, in the case of explosives, their compatibility group). For instance, the hazard identifier of acrylamide is 6.1 and the one of cigarette lighters is 2.1. If a substances poses several dangers, then subsidiary risk identifiers may be specified. It is not possible to deduce the hazard class(es) of a substance from its UN number: they have to be looked up in a table. The hazard classes and their divisions are: Class 1: Explosives Division 1.1: Substances and articles which have a mass explosion hazard Division 1.2: Substances and articles which have a projection hazard but not a mass explosion hazard Division 1.3: Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard Division 1.4: Substances and articles which present no significant hazard Division 1.5: Very insensitive substances which have a mass explosion hazard Division 1.6: Extremely insensitive articles which do not have a mass explosion hazard Class 2: Gases Division 2.1: Flammable gases Division 2.2: Non-flammable, non-toxic gases Division 2.3: Toxic gases Class 3: Flammable liquids Class 4: Flammable solids; substances liable to spontaneous combustion; substances which, on contact with water, emit flammable gases Division 4.1: Flammable solids, self-reactive substances and solid desensitised explosives Division 4.2: Substances liable to spontaneous combustion Division 4.3: Substances which in contact with water emit flammable gases Class 5: Oxidizing substances and organic peroxides Division 5.1: Oxidizing substances Division 5.2: Organic peroxides Class 6: Toxic and infectious substances Division 6.1: Toxic substances Division 6.2: Infectious substances Class 7: Radioactive material Class 8: Corrosive substances Class 9: Miscellaneous dangerous substances and articles

GR：Guaranteed reagent（优级纯试剂）

AR：Analytial reagent（分析纯试剂）

CP：Chemical pure（化学纯试剂）

LR：Laboratory reagent（实验试剂）

优级纯（GR，绿标签）：主成分含量很高、纯度很高，适用于精确分析和研究工作，有的可作为基准物质。

分析纯（AR，红标签）：主成分含量很高、纯度较高，干扰杂质很低，适用于工业分析及化学实验。

化学纯（CP，蓝标签）：主成分含量高、纯度较高，存在干扰杂质，适用于化学实验和合成制备。

实验纯（LR，黄标签）：主成分含量高，纯度较差，杂质含量不做选择，只适用于一般化学实验和合成制备。

扩展资料

《化学试剂标签》承载信息：

1、注册商标：明确标示生产厂商注册的商标。

2、质量标准：质量标准同时用颜色和汉语拼音代码两种方式显示。颜色显示区域为标签下部厂商信息区域；汉语拼音代码（如BZ、SH、DZ、SY）在显著位置标示。

3、中文名称及型态：产品名称以中国化学会1982年公布的“无机化学物质系统命名原则”、“有机化学物质系统命名原则”为主要依据，兼顾长期使用的俗名、商品名。并且尽可能准确地给出能够描述该化学试剂的型态或剂型，例如：水溶液、醇溶液、粉、块、棒、膏，甚至粒度如200目等。

4、英文名称：产品名称以IUPAC 1982年公布的“无机化学物质系统命名原则”、“有机化学物质系统命名原则”为主要依据，兼顾长期使用的俗名、商品名。

5、CAS登录号：由方括号内的9位数构成，以连字符分成三个部分，例如，[58-08-2]是咖啡因的CAS登记号。

6、分子式=分子量：正确书写分子简式，即分子示量式，按照1968年公布国际原子量准确计算分子量。如NaOH=40.10。

7、主成份含量：按照国家标准或企业标准所规定的分子方法，测定的该化学试剂的质量百分比含量。如99.9%。

8、包装量：固体物质给出该化学试剂的质量包装量，如1g、5g、10g、25g、100g、250g、500g、1000g等。液体或气体给出该化学试剂的体积包装量，如1ml、5ml、10ml、25ml、100ml、250ml、500ml、1000ml等。

9、外观：用简洁、准确的字词来描述该化学试剂的颜色、嗅味、物态等物理状态。

10、物理常数：依次顺序给出“熔点、沸点、密度、粘度、旋光度、折光系数、溶解度”等物理常数测定值。

11、特征光谱：给出“紫外、红外、核磁光谱”等特征吸收峰。

12、干扰杂质含量：给出主要杂质质量百分含量，尤其是主要干扰杂质的质量百分含量的准确测定值。

13、危险品规则号：属于危险品的必须标示危险品规则号。 生产批号：给出生产批号以利于溯源。

参考资料来源：百度百科-化学试剂

这些都是用于表现纯度等级的，不同纯度一般用于不同的用途（纯度高成本也高，纯度低则杂质中能够多影响生产或反应现象）。常 用 化 学 试 剂 规 格 和 标 准 (Standards And Grades Of Purity)GR：Guaranteed reagent 优级纯 （用绿色标签）AR：Analytial reagent 分析纯 （用红色标签）CP：Chemical pure 化学纯 （用深蓝色标签）LR：Laboratory reagent 实验试剂