Wholesale Bleach Purex HE 2 Powder is safe on all colorfast washable fabrics, including cotton, polyester, blends, wool, rayon, nylon, spandex, acrylic, linen and silk . Chlorine free. No phosphates. Uses biodegradable cleaning agents. If in doubt about a garment, dissolve 1 tsp. in 1 cup hot water. Soak a hidden area of the garment for 1 minute. Rinse and dry. If color is not affected, wash as usual. Net wt 29oz, packed 6 per case.