Formaldehyde test of fabric:
Formaldehyde test method is applicable to textile fabrics that involve formaldehyde, particularly fabrics finished with chemicals containing formaldehyde. If the fabric contains formaldehyde then it will be harmful to the skin. So formaldehyde must be released from the fabric. It is the buyer’s one of the important tests which must be passed. The process flowchart of formaldehyde testing for fabric is given below.
Formaldehyde Testing for fabric Procedure:
Take Fabric (1 gm).
100 ml distilled water
Water Bath (60 min x 40 C)
Water Filtered with Filter Paper
Take the liquor into Test Tube
Nash Reagent (A. Acid +Acetyl Acetone + Ammonium Acetate)
Water Bath 30 minutes(40 C)
Room Temperature 30 minutes for Cool
Formaldehyde is a chemical compound. It’s widely used in garments manufacturing. Formaldehyde is often found in everyday apparel products such as textile products, handbags, footwear, accessories, garments, beauty, and cosmetic products, and areas of application include adhesives, textile processing, and as a preservative in some paints, coating products, and also in some cosmetics.
But, Formaldehyde is commonly restricted according to the end consumer with the acceptable limits for children being significantly lower than those for adults. Formaldehyde is one of the key examples of how variable the restrictions can be. Brands and retailers commonly impose restrictions, setting limits in the region of 20-200ppm depending on end-use. Bio-available Formaldehyde is considered a risk to human health as some individuals may experience adverse effects such as watery eyes; burning sensations in the eyes, nose, and throat; coughing; wheezing; nausea; and skin irritation.
General Lab Testing for Textiles
- Fiber identification.
- Eco-textile testing.
- Banned azo dyes and colorants.
- Colorfastness check.
- Antibacterial and antimicrobial testing.
- Formaldehyde testing.
- Dimensional stability and appearance evaluation after laundering cycles.
- Heavy metals in surface coatings.
Author of this Article: Noor Ahmed Raaz Asst. Merchandiser A.M.C.S Textile Ltd Email: [email protected]