UNIVERSITY OF BASEL DEPARTMENT OF CHEMISTRY Logo der Universität Basel
Home  HOME UNIVERSITY FACULTY PHIL. II
Safety
important phone numbers
alarm and case of emergency
work practices
gas bottle labeling
additional informations
laser systems
downloads
deutsche Version
Computing
Materialbestellung
Teaching
PhD Chemistry community
How it works
gas bottle labeling in Switzerland

with the new european norm EN 1089-3, all the colour marks on the gasbottles will change. this will be done in the period of time from january 98 to july 2006.

the colour mark is placed on the shoulder of the bottles.(the caps can be changed too easy with wrong ones.) during the period of change the bottles are signed with
two big N for New on the shoulder. (don`t mistake for N in Nitrogen)

the colours do not correspond to the content of a bottle, they correspond to the danger going out of the content.

e.g. yellow for corrosiv gases, red for inflammable gases.

the following list is not complete. for other gases and mixtures ask the supplier.


gas formula
old colour mark
new colour mark
acetylene C2H2 orange oxyd red
ammonia NH3 violet zinc yellow
argon Ar brownn/green emerald green
chlorine Cl2 yellow zinc yellow
hydrogenchloride HCl yellow/red zinc yellow
dinitrogenoxide N2O green/silver blue
helium He yellow/green olive brown
carbondioxide CO2 black dust grey
krypton / neon
xenon
Kr / Ne
Xe
grey, black yellow green
air
brown yellow green
air synthetic
grey yellow green
methane CH4 red/brown fire red
oxygen O2 blue white
nitrogen N2 green black
hydrogen H2 red fire red
mixtures inert Ar / CO2
N2 / CO2
grey yellow green
mixtures inert /
oxidising
O2 / CO2
O2 321%
grey light blue
mixtures inert /
oxidising
O2 /CO2
O2 <21%
grey yellow green
mixtures inert /
flammable
H2 / Ar
CH4 / N2
H2 / N2
grey

red/green

fire red