Os: I'd be more inclined to trust the Merck's latest entry's but here is some data from 1953 that states Pseudoephedrine hcl is soluble in chloroform.
Physical Properties of Pseudoephedrine (d-Ephedrine)
Manske & Holmes, The Alkaloids, Vol III, p 347, Academic Press (1953)
--------------------------------------------------------------------------
The base forms white rhombic crystals, mp 118°C (from water) and is much
less soluble in water than ephedrine. Hydrochloride, colorless needles,
mp 181-182°C,
the salt is soluble in chloroform. Hydriodide, rhombic
crystals, mp 172°C (43).
l-pseudo-Ephedrine has not been found in nature. The base has mp 118-118.7°C.
The hydrochloride has mp 182-182.5°C. The l-pseudo-ephedrine-d-tartrate has
mp 178°C; l-pseudo-ephedrine-l-tartrate, mp 178.5°C (17, 68, 69, 70).
dl-pseudo-Ephedrine (racemic pseudo-ephedrine) melts at 118°C.
The hydrochloride has a mp of 164°C.
http://www.ephedra.demon.nl/stories/chemical.htm