Thursday, February 26, 2009

Saint Alto was the eponymous founder of Altomünster Abbey in about 750, a monastery in Bavaria around which a market town grew up, also called Altomünster.
Little is known about him: he is believed to have been a wandering Irish monk, and to have been a hermit at Munich and Augsburg. His feast day is celebrated on 9 February.
There is a Vita by Otloh of St. Emmeram of c. 1062.
-35 °C (987 K)
125 °C (1685 K)
Thiophosphoryl chloride is an inorganic compound with the formula PSCl3. [1] Thiophosphoryl chloride, PSCl3, is a fuming, colorless liquid with a pungent odor. It is synthesized from phosphorus chloride and used to thiophosphorylate organic compounds, such as to produce insecticides.

Thiophosporyl chloride can be generated by several reactions starting from phosphorus trichloride. The most common and practical synthesis, hence used in industrial manufacturing, is directly reacting phosphorus trichloride with excess sulfur at 180 °C. [2]
PCl3 + S → PSCl3
Using this method, yields can be very high after purification by distillation. Catalysts can further the reaction at lower temperatures, but are not necessary. Alternatively, the reaction of phosphorus pentasulfide and phosphorus pentachloride also affords thiophosporyl chloride in yields around 70%. [3]
3PCl5 + P2S5 → 5PSCl3

PSCl3 is soluble in benzene, carbon tetrachloride, chloroform, and carbon disulfide.[1] However, it hydrolyzes rapidly in basic or hydroxylic solutions, such as alcohols and amines, to produce thiophosphates.[2]