Psychedelia.dk

Properties: Hexagonal prisms by sublimation, mp 238°. Odorless with bitter taste. Sublimes 178°. Fast sublimation is obtained at 160-165° under 1 mm press. at 5 mm distance. d418 1.23. pH of 1% soln 6.9. Absorption spectrum: Hartley, J. Chem. Soc. 87, 1802 (1905). One gram dissolves in 46 ml water, 5.5 ml water at 80°, 1.5 ml boiling water, 66 ml alcohol, 22 ml alcohol at 60°, 50 ml acetone, 5.5 ml chloroform, 530 ml ether, 100 ml benzene, 22 ml boiling benzene. Freely sol in pyrrole; in tetrahydrofuran contg about 4% water; also sol in ethyl acetate; slightly in petr ether. Soly in water is increased by alkali benzoates, cinnamates, citrates or salicylates. LD50 orally in mice, hamsters, rats, rabbits (mg/kg): 127, 230, 355, 246 (males); 137, 249, 247, 224 (females) (Palm).

Melting point: mp 238°
Density: d418 1.23
Toxicity data: LD50 orally in mice, hamsters, rats, rabbits (mg/kg): 127, 230, 355, 246 (males); 137, 249, 247, 224 (females) (Palm)

Derivative Type: Monohydrate
Properties: Felted needles, contg 8.5% H2O. Efflorescent in air; complete dehydration takes place at 80°.

Derivative Type: Mixture with citric acid
CAS Registry Number: 69-22-7
Additional Names: Caffeine citrate; citrated caffeine
Trademarks: Cafcit (Roxane)
Literature References: Clinical trial in treatment of apnea in premature neonates: P. B. Larsen et al., Acta Paediatr. 84, 360 (1995).
Properties: White, crystalline powder; acid reaction. Sol in about 4 parts warm water.

Therap-Cat: CNS stimulant; respiratory stimulant.
Therap-Cat-Vet: Cardiac and respiratory stimulant; diuretic.

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