... and quality assured. 3. CAS NO.: 590-46-5 Betaine hydrochloride 98%, 97%, 95%, Green Feed AdditiveEnglish name : Betaine anhydrousCAS NO ... .7 g/100 mL (25°C).Appearance: 98%, 95% Betaine hydrochloride is white crystalline particles with moist absorption, pH=0.8 ... ~1.2.97% Betain hydrochloride is white crystalline powder with moist absorption, pH=0.8 ...