–
95°
/26
mm.,
n
D
25
1.4497,
d
4
20
=
1.095, is collected
(Note 4)
.
2. Notes
1. Supplied by the General Aniline and Film
Corporation.
2. Considerable darkening occurs even when the acid is well dispersed. The yield
appears not to be affected.
3. Other tem
peratures are: b.p. 75
–
77°
/16 mm.; 90
–
92°
/28 mm. This first
distillate contains 14% (±
3%) of water as determined by interpolation of the
refractive indices.
4. Calcd.
M
D
=
21.64. Found: 21.72. As obtained by this single fractionation the
submitters found the alcohol to be analytically pure: Calcd. for C
4
H
8
O
2
: C, 54.53; H,
9.14. Found: C, 54.74; H, 9.32. Others have reported: b.p. 50°
/1 mm
.,
n
D
18
1.4486,
d
4
20
=
1.090,
2
and b.p. 81°
/13 mm.,
d>
18
= 1.07,
n
D
18
1.4478.
3
3. Discussion
3-Hydroxytetrahydrofuran
has been obtained during the preparation of
1,2,4-trihydroxybutane
,
3
by hydrolysis of
4-chloromethyl-1,3-dioxane
2
and by acid