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[Lubrizol] A registered trademark for a series of polyacrylic acids used as gelling agents. Carbopol® polymers are white, fluffy powders, clear gels or dispersed emulsions. The variety of options cover a wide pH range and electrolyte tolerance as well as options for many viscosities. Carbopols are used in many personal care products.

- Carbopol® 910

- Carbopol® 934

- Carbopol® 940

- Carbopol® 941

- Carbopol® 954 - carboxypolymethylene

Synonyms and Related Terms

carbomer; carboxypolymethylene


  • Skin contact and inhalation of dust may cause irritation.
  • ThermoFisher: Carbopol 940 SDS

Physical and Chemical Properties

  • pKa = 5.0 - 6.0
  • pH of 1% dispersion is about 2.5-3.0
  • Density = 1.41 g/ml
  • Tg = 100-105 C

Resources and Citations

  • Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
  • Conservation Support Systems, Catalog, 1997
  • Ceramics and Glass Conservation Section, List of Workshop Materials, The British Museum, London
  • Marie Svoboda, Conservation Survey Index, unpublished, 1997
  • Teri Hensick, contributed information, 1998

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