GFS Organics Modern Acetylene Chemistry for ... - ThomasNet

Product Information
Chemical Abstracts Service
numbers are included for
most products. This number
may be the one listed for
the compound in the TSCA
Substance Inventory for some
hydrated materials. Some
additional product information
is available in the GFS Chemicals
Publications listed inside
the back cover of our print
catalog.
Definitions of Purity Grades
Certified: Primary standard
material for use in very exact
analysis. Assay between
99.97% and 100.03% with
our determined value on
the label.
Primary Standard: For use as
a standard in analysis. Assay
value 99.9% to 100.1%, or
as noted.
High Purity Materials: When
the assay appears as a
specification, it is based on a
determination of the product.
When the assay appears as
part of the product name, it
refers to a metals purity basis
and does not indicate
standard reference purity.
Reagent (ACS): Material
meets specifications as given
in ACS Reagent Chemicals or
supplements thereto.
Reagent: High purity material
meeting the indicated specifications.
Normally, specifications
are comparable to those
for similar ACS materials.
Technical: Material satisfactory
for uses where a reagent
grade is not necessary.
Commercial: Materials being
prepared in volume for general
industrial use. Normally
not of reagent quality.
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