Sodium ethyl xanthate

Sodium ethyl xanthate
Ball-and-stick model of the component ions of sodium ethyl xanthate
Names
IUPAC name
sodium O-ethylcarbonodithioate
Other names
Sodium ethylxanthogenate
Sodium-O-ethyl dithiocarbonate
SEX
Identifiers
3D model (JSmol)
Abbreviations SEX
ChemSpider
ECHA InfoCard 100.004.947 Edit this at Wikidata
EC Number
  • 205-440-9
UNII
  • InChI=1S/C3H6OS2.Na/c1-2-4-3(5)6;/h2H2,1H3,(H,5,6);/q;+1/p-1
    Key: RZFBEFUNINJXRQ-UHFFFAOYSA-M
  • CCOC(=S)[S-].[Na+]
Properties
C3H5NaOS2
Molar mass 144.18 g·mol−1
Appearance Pale yellow powder[1]
Density 1.263 g/cm3[1]
Melting point 182 to 256 °C (360 to 493 °F; 455 to 529 K)[1]
Boiling point decomposes
450 g/L (10 °C)[1]
Acidity (pKa) 1.6[1]
Basicity (pKb) 12.4[1]
Hazards
GHS labelling:
GHS02: FlammableGHS05: CorrosiveGHS06: ToxicGHS07: Exclamation mark
Danger
H228, H302, H311, H314, H315, H319, H332, H335
P210, P240, P241, P260, P261, P264, P270, P271, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P370+P378, P403+P233, P405, P501
250 °C (482 °F; 523 K)[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium ethyl xanthate (SEX)[3] is an organosulfur compound with the chemical formula CH3CH2OCS2Na. It is a pale yellow powder, which is usually obtained as the dihydrate. Sodium ethyl xanthate is used in the mining industry as a flotation agent.[4] A closely related potassium ethyl xanthate (KEX) is obtained as the anhydrous salt.

  1. ^ a b c d e f Report 5 (1995) p. 5
  2. ^ Report 5 (1995) p. 6
  3. ^ Caroline Cooper (23 July 2010). Organic Chemist's Desk Reference. CRC Press. pp. 123 (Acronyms and Miscellaneous Terms used in Describing Organic Molecules). ISBN 978-1-4398-1164-1. Retrieved 22 February 2011.
  4. ^ Kathrin-Maria Roy (2005). "Xanthates". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a28_423. ISBN 3527306730.