Chemical Glossary

CAS Number: 74-82-8. A colorless, odorless, flammable, gaseous
hydrocarbon that is a product of decomposition of organic
matter and of the carbonization of coal. It is used as a fuel and
as a starting material in chemical synthesis, and is the
simplest of the alkanes. Chemical formula = CH4. Molecular
weight = 16 g/mol.

A degradation product of chlorophyll-a that interferes with the
measurement of chlorophyll-a, resulting in its over- or
under-estimation. Pheophytin-a measurements help to determine a
more accurate measure of chlorophyll-a.

CAS Number: 75-07-0. A colorless, volatile, water-soluble liquid
aldehyde used primarily in organic synthesis. Chemical formula =
CH3CHO. Molecular weight = 44.06 g/mol.

CAS Number: 60-35-5. A white, crystalline amide of acetic acid
used primarily as a solvent and also in organic synthesis.
Chemical formula = C2H5NO. Molecular weight = 59.07 g/mol

CAS Number: 67-64-1. A volatile, fragrant, flammable liquid
ketone used primarily as a solvent and also in organic synthesis.
Chemical formula = C3H6O. Molecular weight = 58.08 g/mol.

CAS Number: 75-05-8. The colorless liquid nitrile of acetic
acid used primarily in organic synthesis and as a solvent.
Chemical formula = C2H3N. Molecular weight = 41.05 g/mol.

CAS Number: 107-02-8. A colorless, irritant, pungent liquid
aldehyde used primarily in organic synthesis. Chemical formula =
C3H4O. Molecular weight = 56.06 g/mol.

CAS Number: 79-06-1. An amide that is derived from acrylic
acid, that polymerizes easily, and is used in the
manufacture of synthetic textile fibers. Chemical formula =
C3H5NO. Molecular weight = 71.08 g/mol.

CAS Number: 79-10-7. An unsaturated liquid acid that is used as a
constituent for varnishes and lacquers. Chemical formula = C3H4O2.
Molecular weight = 72.06 g/mol.

CAS Number: 107-13-1. A colorless, volatile, flammable liquid
nitrile used primarily in organic synthesis, and for
polymerization. Chemical formulat = C3H3N. Molecular weight =
53.06 g/mol.