(C 10 -C 21 ) alkanesulfonic acid phenyl ester

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(C 10 -C 21 ) Alkanesulfonic acid phenyl ester is a mixture of different alkyl sulfonic acid esters ( sulfonates ) of phenol (ASE), which is sold under the trade names Mesamoll and Mesamoll II .

The ester mixture is used as a phthalate-free plasticizer for PVC (to replace DEHP ), PUR and various types of natural and synthetic rubber (e.g. in water beds ). In addition to its function as a plasticizer, it gives PVC good weather and light resistance and, due to its dielectric properties, the soft PVC has excellent high-frequency weldability. It is easy to gel and resistant to saponification .

properties

safety instructions
Surname
  • (C 10 -C 21 ) alkanesulfonic acid phenyl ester
  • Phenyl ((C 10 -C 21 ) alkanesulfonate)
  • Mesamoll
  • ML
CAS number

91082-17-6

EC number

293-728-5

ECHA InfoCard

100.085.174

GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases

Physical Properties

Mesamoll is a liquid with a density of ~ 1.06 g · cm −3 and a viscosity of 125 ± 15 mPa · s at 20 ° C. The melting point is −15 ° C , the boiling point around 200 ° C (at 13 h Pa ). The refractive index is given as 1.499 ± 0.003, the solubility in water is very poor (2 mg · l −1 at 20 ° C).

Chemical properties

Mesamoll consists of 75–85% of a mixture of secondary alkane sulfonic acid phenyl esters and additionally contains 15–25% secondary alkane disulfonic acid diphenyl ester and 2–3% non-sulfonated alkanes . The alkyl chains are predominantly unbranched, with chain lengths mainly in the range of C 13 –C 17 .

  • unbranched, secondary alkanesulfonic acid phenyl
    ester
    a + b = 12–16

  • unbranched, secondary
    diphenyl alkanedisulfonate
    c + d + e = 11–15

  • unbranched alkane
    f = 13-17

safety instructions

In the presence of iron, Mesamoll and Mesamoll II can discolour at temperatures above 120 ° C and after prolonged contact. Mesamoll has a flash point of 210 to 240 ° C. Although Mesamoll II has biodegradable properties, the FDA does not classify it as readily biodegradable.

Individual evidence

  1. ↑ a b c d e f g Entry on (C10-C21) alkanesulfonic acid phenyl ester in the GESTIS substance database of the IFA , accessed on May 8, 2008(JavaScript required) .
  2. ↑ a b c data sheet Mesamoll at Lanxess (PDF; 176 kB)
  3. ↑ Data sheet Mesamoll-II at Lanxess (PDF; 176 kB).
  4. ↑ a b U. S. Food and Drug Administration , Attachment 10 “Environmental Assessment” to Part IV of Food Contact Notification No. 663, 2006 ( online ; PDF; 33 kB).