Tentative method of analysis for formaldehyde content of the atmosphere (colorimetric method). 48502-01-69.
D000397:Air Pollution / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D003124:Colorimetry; D005557:Formaldehyde / Q000032:analysis*; D008722:Methods; D009281:Naphthalenes; D013053:Spectrophotometry; D013451:Sulfonic Acids; D013464:Sulfuric Acids
D009281:Naphthalenes; D013451:Sulfonic Acids; D013464:Sulfuric Acids; D005557:Formaldehyde