Cobalt naphthenate

Cobalt naphthenate is a mixture of cobalt (II) derivatives of naphthenic acid from the group of carboxylic acid salts .

Extraction and presentation

Cobalt naphthenate can be obtained by reacting cobalt (II) hydroxide or cobalt (II) acetate with naphthenic acids .

properties

safety instructions
Surname	Cobalt naphthenate Naphthenic acids, cobalt salts Cobalt naphthenate Cobalt (II) naphthenate
CAS number	61789-51-3
GHS labeling of hazardous substances Caution H and P phrases H: 228-317-351 P: 210-261-280-284-301 + 310-370 + 378
Toxicological data	3900 mg kg −1 ( LD 50 ,  rat ,  oral )

Cobalt naphthenate is a dark brown flammable solid with a gasoline-like odor that is practically insoluble in water. The empirical formula is given as CoC ₁₈ H ₁₂ O ₄ - CoC ₂₂ H ₁₄ O ₄ . The density is 0.9 g · cm ^-3 , the melting point is 140  ° C .

use

Cobalt naphthenate is used as a hardening accelerator in the oil paint industry. Metal soaps of cobalt used in this way are generally sold under the trade name Cobalt accelerator. It is also used in polyester resins , in paint dryers and as a crosslinking catalyst for unsaturated polyester resins . It is also used in the manufacture of adhesives, varnishes and sealants for textiles. It also serves as an anti-corrosion agent , lubricant and fuel additive and plays an important role as an oil drying agent .

Individual evidence

1. ^ Jeanne Duus Johansen, Peter J. Frosch, Jean-Pierre Lepoittevin: Contact Dermatitis . Springer Science & Business Media, 2010, ISBN 978-3-642-03827-3 , p. 1161 ( limited preview in Google Book search).
2. ↑ ^{a b c d} Entry for CAS no. 61789-51-3 in the GESTIS substance database of the IFA , accessed on July 23, 2016(JavaScript required) .
3. ↑ Data sheet Cobalt naphthenate, 6% from Sigma-Aldrich , accessed on June 26, 2016 ( PDF ).
4. ↑ Richard P. Pohanish: Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, 5th Edition . William Andrew, 2008, ISBN 978-0-8155-1904-1 , pp. 700 ( limited preview in Google Book Search).
5. ↑ Entry on cobalt accelerator. In: Römpp Online . Georg Thieme Verlag, accessed on June 26, 2016.
6. ↑ Data sheet Cobalt naphthenate, Co 6%, approximately 53% in mineral spirits from AlfaAesar, accessed on June 26, 2016 ( PDF )(JavaScript required) .
7. ↑ Manfred Baerns, Arno Behr, Axel Brehm, Jürgen Gmehling, Kai-Olaf Hinrichsen, Hanns Hofmann, Ulfert Onken, Regina Palkovits, Albert Renken: Technische Chemie . John Wiley & Sons, 2014, ISBN 978-3-527-67409-1 , pp. 588 ( limited preview in Google Book search).
8. ↑ Bernhard Schultz: Farbwarenkunde . Springer-Verlag, 1953, ISBN 978-3-322-98438-8 , pp. 112 ( limited preview in Google Book search).