StacksVerified U.S. regulatory reference

27 CFR §21.106

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Refractive index at 25 °C. 1.497 to 1.502.
  2. (b)Color. Colorless.
  3. (c)Odor. Practically odorless.
  4. (d)Solubility. Soluble in 20 parts of 60 percent alcohol.
  5. (e)Specific gravity at 25 °/25 °C. 1.115 to 1.118.
  6. (f)Ester content (as diethyl phthalate). Not less than 99 percent by weight.