Antimony trifluoride solubility

Sb is oxidized by nitric acid, forming a gelatinous precipitate of bydrated antimony pentoxide. It does not react with cold dilute sulfuric acid. However, reaction occurs in bot concentrated acid an oxysulfate of indefinite composition and low acid-solubdity is formed. It reacts with bydrofluoric acid to form soluble antimony trifluoride and pentafluoride. Hydrochloric acid in the absence of air does not readily attack tbe metal however, finely divided antimony reacts with hot concentrated acid forming chloride salt. 

Antimony trifluoride, 16 181 preparation of, 7 14-15 solubility of, 7 6-7 Antimony trifluoroacetates, 17 12, 13 Antiperspirants, 36 16 Anti-Stokes emission, 35 342-343 Antitumor agents DNA and RNA cleavers, 45 252 phosphazotrihalides as, 14 90, 91... 

Antimony trifluoride is a very hygroscopic, white, crystalline powder. To keep it dry, it is always kept packaged under the atmosphere of nitrogen or argon. Its solubility in water is 384.7 g/100 g at 0°C and 492.4 g/100 g at 25°C [91]. It is also soluble in methanol (154 g/100 ml) and acetone 55.3g/100 ml at 25°C. It goes under hydrolysis in water slower than SbCl3. 

Antimony trifluoride [7783-56-4] M 178,8, m 292", b 376", dj 4.379. It crystallises from MeOH to remove oxide and oxyfluoride, then it is sublimed under vacuum in an aluminium cup on to a water-cooled copper condenser. Its solubility is 443g/100g in H2O at 20 and 562g/100g in H2O at 30 with partial hydrolysis. [Woolf J Chem Soc 279 7955, Kwasnik in Handbook of Preparative Inorganic Chem (Ed. Brauer) Academic Press Vol I p 199 7965]. 

---