Chemical and other Safety Information

Acids & Bases - Strengths of Solutions



A list of known and suspected carcinogens.

CAS Numbers - Selected Chemicals

Chemical abbreviations

Safety Data for Common Chemicals

    This section provides links to data in student-friendly format from the HSci project The data provided cover a number of chemicals commonly found in school science labs, some listed by their non-systematic (but frequently-used) names. [A much more extensive list of links to MSDS safety information follows here.]

Consumer and Industrial Products




EU to CAS number converter

Flash Point (Low) Chemicals

Foreign-language databases

    Links to chemical safety data in languages other than English.

Gases: Safety Information on Industrial and Scientific Gases

Data are available on a wide range of gases from the BOC group, Matheson and Scott Gas. Tips on the safe handling of compressed gases.

Gas Cylinder Colour Codes


A glossary of terms related to chemical safety.

Gloves, Chemically-resistant

    A list of chemically resistant glove material suitable for working with a variety of inorganic and organic chemicals. Information is organized by glove material and by chemical.

Hazard codes (UN)

A list of UN hazard codes is given in the glossary.

Common Highly Toxic Chemicals

Incompatible Chemicals

A list of materials which are incompatible with widely-used chemicals.

Interpreting MSDS Sheets

Laser Classification

    An outline of the scheme used to classify lasers by their potential to cause harm.

Maximum Exposure Limits

MELs have, in the UK, now been replaced by Workplace Exposure Limits.

MSDS (Material Safety Data Sheet) Information

Information on chemicals is ordered alphabetically in the directories below (contents approximately 28,645 names, though the number of distinct substances is smaller because of the inclusion of many synonyms). The web pages are not reproductions of 16-point data sheets, but contain key safety information for each chemical. If you intend to use the chemical, we suggest that you obtain MSDS data from your supplier to supplement the data given here, before starting work.

First check the appropriate directory below. If you can't find the chemical you want, try clicking here.

A . B . C . D . E . F . G . H . I . J . K . L . M . N . O . P . Q . R . S . T . U . V . W . X . Y . Z
Azeotropes ... Blends ... Colour index ... Freons



A list of chemicals which may form peroxides during storage.

Risk and Safety Phrases

Most MSDS sheets now contain codes such as R23 or R45 which correspond to certain "risk phrases", and S17 or S24, which correspond to certain "safety phrases". Meanings of these risk phrases as used in the EU are given here, and meanings of the safety phrases are given here.

Shock-sensitive Materials

    A list of materials which, either on their own or in combination with reducing agents, may be shock or friction-sensitive.