Forensic Applications for 1,4-Dioxane and Solvent Stabilizers - Environmental Investigation and Remediation - page 444

TABLE 9.9
Stabilizers and Impurities in 1965 Technical Grade Methyl Chloroform
from Four Suppliers

Octagon Process
Company (vol%)

Fisher Chemical
Company (vol%)

Phillips-Jacobs Chemical
Company (vol%)

Eastman Kodak
Company (vol%)

Methyl chloroform (%) 65 94 95.5 95

Stabilizers
1,4-Dioxane — 3.6 3.4 4.5

1,2-Dimethoxymethane 0.24 — — —

tert -Butyl alcohol 3.64 — — —

Nitromethane 1.3 — — —

Diethyl ether trace — — —

sec -Butyl alcohol — 0.2 0.2 0.3

Impurities
Trichloroethylene

7.6 — — —

1,2-Dichloroethane 22 2.1 0.8 —

1,1-Dichloroethylene 0.06 Trace Trace Trace

1,1,2-Trichloroethane Trace — — —

1,2-Dichloroethylene Trace — Trace Trace

2-Chlorobutane — Trace — —

Source: After Saunders, R.A., 1965, The Composition of Technical Grade Methyl Chloroform . Washington, DC: Physical
Chemistry Branch, U.S. Navy Research Laboratory.

1,2-
Dichloroethane

Methyl chloroform
× 100

1,4-Dioxane
× 5

1,2-
Dichloroethylene

-
Butyl alcohol

sec

1,1-
Dichloroethylene

0 10 20 30

Retention time (min)

FIGURE 9.2 Chromatogram of 1965 methyl chloroform sold by Phillips-Jacobs Chemical. (From Saunders,
R.A., 1965, The Composition of Technical Grade Methyl Chloroform . Washington, DC: Physical Chemistry
Branch, U.S. Navy Research Laboratory.)