Compendium of Chemical Terminology (化学术语总目录，在线版本可免费浏览和检索)(免费)
【主要内容】
This second edition of IUPAC's 'gold' book represents a very substantial enhancement of the first. In the ten years since the first edition was published, IUPAC has revised and updated most of the original definitions, and produced new glossaries of terms in many areas of chemistry not previously covered. These include stereochemistry, photochemistry, organic class names, atmospheric chemistry, catalysis, biotechnology, chromatography, toxicology and bioanalytical chemistry. The resulting compendium, like the first edition, contains only definitions approved by international consensus and thus can be regarded as truly authoritative.

* the definitive guide to chemical terminology, now significantly updated and expanded
* contains 7000 entries
* an essential reference resource for all practicing chemists

Contents
Preface; Acknowledgements; Alphabetical Entries; Source Documents

464 pages

online version - including browsing or searching options

ChemIDplus (化合物别名、结构式字典库)(免费)

Chem Sources
【数据内容】
Chem Sources was conceived in a small office on Wall Street in New York City in 1958. It has evolved into the most authoritative and widely recognized chemical source directory among purchasing agents, chemists, researchers and industrialists.

Chem Sources is not restricted to certain classes of chemical products. You will find agriculturals, organics, petrochemicals, pharmaceuticals, reagents, resins, etc., etc. Also included is a section of chemical trade name products and services provided by thousands of chemical manufacturers.

Major Products:

Chem Sources - International is a chemical buyer's guide published in the first quarter on a biennial schedule. Each edition is completely recompiled in accordance with information submitted to us by participating firms from countries around the world. Chem Sources - International includes the products of more than 8,000 chemical firms spanning 135 countries. The Chemical Section lists approximately 250,000 chemical compounds and the Trade Name and Classified Sections list some 25,000 Chemical Trade Names. The Company Directory gives all pertinent contact data necessary for making direct inquiries to each chemical firm.

CIS Chemical Inventory System: The CIS Chemical Inventory System is a high-performance, relational database system for tracking chemicals and other laboratory supplies.

材料大全A到Z (金属、陶瓷、高分子、复合材料)(免费)
【数据内容】
The site profiles thousands of materials, from zirconium-containing alloys that remember their shape to ABS fire retardant, a plastic used in everything from transformers to oven doors. Each entry lists the material's key properties such as density, hardness, and flammability and discusses its advantages and disadvantages.

WebElements (网上元素周期表 - 元素知识库)
【简介】
WebElements is the first periodic table on the WWW.
WebElements aims to be a high quality source of information on the WWW relating to the periodic table. Coverage is such that professional scientists and students at school will all find something useful. Currently most information is about the elements themselves but the scope of WebElements will include simple compounds as well in the future.
Currently, most information is about the elements themselves but the scope of WebElements will include simple compounds as well in the future.
Note that elements 113, 115, and 117 are not known, but are included in the table to show their expected positions. Elements 114, 116, and 118 have only been reported recently.

Author: Mark Winter [University of Sheffield, England].