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 STUDIES
Year : 2004  |  Volume : 70  |  Issue : 6  |  Page : 342--344

Detection of formaldehyde in textiles by chromotropic acid method


1 Departments of Skin and STD, Kasturba Medical College and Hospital, Manipal, India
2 Departments of Biochemistry, Kasturba Medical College and Hospital, Manipal, India

Correspondence Address:
Shruthakirthi D Shenoy
Dept. of Skin and STD, Kasturba Medical College Hospital, Manipal - 576 104, Karnataka
India
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Source of Support: None, Conflict of Interest: None


PMID: 17642659

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BACKGROUND: The common causes of textile dermatitis are formaldehyde resins and disperse dyes. There are various methods to detect the presence of formaldehyde in clothing. AIM: To detect the presence of formaldehyde in various types of textiles by the chromotropic acid method and to assess the effect of washing on the formaldehyde content. METHODS: Twenty randomly selected textiles from a local cloth store were tested for formaldehyde by the chromotropic acid method. A purple ring indicated a positive reaction. The intensity of the purple ring was graded from 1+ to 3+ and reassessed after washing the clothes. RESULTS: Eleven out of the 20 textiles tested positive for formaldehyde. The fully synthetic clothes were free from formaldehyde. After the first and second washes the majority did not show a reduction in the formaldehyde content. CONCLUSIONS: This is a simple and rapid test which can be used in the practical management of patients with textile allergy. Washing the clothes may not have an effect on the formaldehyde content.






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Online since 15th March '04
Published by Wolters Kluwer - Medknow