Teledyne 4250 Installation And Operation Manual page 183

Chemical Common
Gas
Formula Properties
Sulfur SO Colorless, pun-
2
Dioxide gent odor. Suffo-
cating, corrosive,
poisonous,
non-flammable.
Toluene C H Colorless, ben-
5 12
to zene-like odor.
C H
9 20
Turpentine C H Colorless, Char-
10 16
acteristic odor.
Xylene C H Colorless, flam-
8 10
mable
* Percentages shown represent volume of gas in air.
** For concentration over 0.3%.
***Mostly methane and carbon dioxide with small amounts of hydrogen, nitrogen, hydrogen sulfide, and oxygen; occasionally traces of carbon monoxide.
Table C-1 Hazardous Gases (Continued)
Specific
Max
Gravity
Physiological Safe 60
or Vapor
Effect Min. Exposure
Density
ppm
Air =1
2.26 Inflammation of 50
the eyes. 400 to to
500 ppm imme- 100
diately fatal.
3.14 At 200-500 ppm, 200
headache, nau-
sea, bad taste,
lassitude.
4.84 Eye irritation. —
Headache, diz-
ziness, nausea,
irritation of the
kidneys.
3.66 Narcotic in high —
concentrations.
less toxic than
benzene.
Appendix C General Safety Procedures
Explosive Likely
Max. Safe
Range (% by Location
8 Hour
vol. in air) of
Exposure
Limits Highest
ppm
lower/upper Concentration
10 — — At bottom, can
combine with
water to form
sulfurous acid.
100 1.27 7.0 At bottom.
100 At bottom.
100 1.1 7.0 At bottom.
4250 Flow Meter
Simplest and
Most
Cheapest
Common
Safe Method
Sources
of Testing
Industrial Detectable
waste, taste and odor
combus- at low concen-
tion, com- tration.
mon air
pollutant.
Solvent. Combustible
gas indicator.
Solvent, 1. Detectable
used in odor at low
paint. concentration
s.
2.Combustible
gas indica-
tor.
Solvent Combustible
gas indicator.
C-9