Detail of "25808-74-6"

CAS Number:
25808-74-6
Name:
Silicate(2-),hexafluoro-, lead(2+) (1:1)
Molecular Structure:
Formula:
F6Si . Pb
Molecular Weight:
385.32
Synonyms:
Leadfluosilicate (PbSiF6) (6CI); Lead hexafluorosilicate (7CI); Silicate(2-),hexafluoro-, lead(2+) (8CI); Lead fluorosilicate; Lead hexafluorosilicate(PbSiF6); Lead silicon fluoride (PbSiF6); Lead(2+) hexafluorosilicate(2-)
EINECS:
247-278-1
Density:
g/cm³
Boiling Point:
19.5 °C at 760 mmHg
Flash Point:
°C
Hazard Symbols:
Toxic. Strong irritant. TLV: 0.15 mg(Pb)/m³.
Safety:
Poison by ingestion. When heated to decomposition it emits very toxic fumes of F⁻ and Pb. See also LEAD COMPOUNDS. Details

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Grids for lead storage batteries: Grids for lead storage batteries. Kiessling, Reiner (Accumulatorenfabriken Wilhelm Hagen A.-G. Soest-Kassel-Berlin, Ger.). Ger. Offen. DE 2540937 17 Mar 1977, 11 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: H01M004-73. APPLICATION: DE 75-2540937 13 Sep 1975. DOCUMENT TYPE: Patent CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) Section cross-reference(s): 60 Electrode grids for Pb-acid batteries are prepd. by electrodeposition of Pb on a steel, Cu, or Al substrate grid from a soln.There are some commonly used reagents with their cas registry numbers 123-31-9 and 12671-80-6 in this article. contg. 320 Pb(BF4)2 [13814-96-5], 30 HBF4 and 10 hydroquinone [123-31-9], or 350 PbSiF6 [25808-74-6], 30 H2SiF6, and 2 g gelatin/L, the anodes being prepd. by remelting of the electrode scrap of Pb-acid batteries. .

Desalination of seawater: Desalination of seawater. Shiga, Susumu; Ogawa, Katsutoshi (Chisso Corp., Japan). Japan. Kokai JP 52087856 22 Jul 1977 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C02B001-18. APPLICATION: JP 76-3350 14 Jan 1976. DOCUMENT TYPE: Patent CA Section: 61 (Water) PbSiF6 is added to seawater at an equiv. amt. of the salt content in the seawater to desalinate by pptn., optionally H2SiF6 and PbO are added sep., and CaCO3 is added. Thus, 60 mL 39.6% PbSiF6 [25808-74-6] soln. was added to 1 L seawater contg. 3% NaCl, then 25 g CaCO3 was added, and the soln. was filtered to obtain a water contg. Na 0.15, Cl 0.25, Pb 0.5, and F 8 ppm.