25
5. Handling precautions
About applicable organic solvents
Chemicals that each type of liquid sending tubes are as follows.
Silicone tube
：
ethanol, isopropyl alcohol, methanol, acetone, acetic ether
Viton tube
：
xylene, toluene, benzene, hexane, chloroform, methylene chloride
[Oxygen concentration limit table]
Organic solvent
Boiling point
〔
℃
〕
Melting point
〔
℃
〕
Oxygen concentration
limit
〔％〕
Xylene
Isopropyl alcohol
Benzene
Ethanol
Acetic ether
Hexane
Methanol
Chloroform
Acetone
Methylene chloride
（
o
）
144
（
m
）
139.3
（
p
）
138.5
82.3
80.1
78.4
77.1
67.7
64.6
61.2
56.2
40
（
o
）
-25
（
m
）
-47.4
（
p
）
13.2
-88
5.5
-114.3
-83.6
-95.3
-97.4
-63.5
-94.6
-97.7
（
o
）
10.5
（
m
）
11.5
（
p
）
11.5
9.0
10.5
9.9
10.0
11.4
9.7
Non-combustible
10.4
23.9
[How to calculate an oxygen concentration limit]
Molecular formula of flammable gases: C
a
H
b
O
c
N
d
S
e
F
f
(F means halogen) d is not used.
Oxygen concentration limit
L: Lower explosion limit of a flammable gas [%]
Example: Toluene
According to the molecular formula C
6
H
5
CH
3
, a=7, b=8, c=e=f=0
Lower explosion limit L=1.2
Oxygen concentration limit
