1,4 dioxane

1,4-dioxane, a human carcinogen is found in many consumer products. Unfortunately it is not one listed on product labels. When cleaning products and detergents are processed using ethoxylation, a cheap technique that lessens the severity of the harsher ingredients, 1,4-dioxane is created. Since it is considered a byproduct of ethylene oxide reacting with other ingredients, 1,4-dioxane is technically considered a contaminant and thus does not have to be included on product labeling. As a result, consumers are largely unaware of its presence in major household products. The results of an independent study testing 20 different laundry detergents; showed the following results with 1,4 dioxane:

Conventional brands:
1. Tide (P&G) – 55 parts per million (ppm)
2. Ivory Snow Gentle (P&G) – 31 ppm
3. Tide Free (P&G) – 29 ppm
4. Purex (Dial Corp.) – 25 ppm
5. Gain 2X Ultra (P&G) – 21 ppm
6. Cheer BrightClean Detergent (P&G) – 20 ppm
7. Era 2X Ultra (P&G) – 14 ppm
8. Arm & Hammer (Church & Dwight Co.) – 5.0 ppm
9. Wisk 2X Ultra (Sun Products Corp.) – 3.9 ppm
10. Woolite Complete Detergent (Reckitt Benckiser) – 1.3 ppm
11. All laundry detergent (Unilever) – 0.6 ppm
12. Dreft powdered detergent (P&G) – non-detectable (ND)
13. Sun Burst (Sun Products Corp.) – ND

"Natural" brands:
1. Planet Ultra Liquid laundry detergent – 6.1 ppm
2. Mrs. Meyers laundry detergent – 1.5 ppm
3. Clorox Green Works Natural laundry detergent – ND
4. Ecos laundry detergent (Earth Friendly Products) – ND
5. Life Tree Laundry Liquid – ND
6. Method Squeaky Green laundry detergent – ND
7. Seventh Generation Free & Clear laundry detergent – ND


Looks like the natural products are the way to go.

Check out this guide by the Organic Consumers Association:
http://www.organicconsumers.org/bodycare/ShoppersSafetyGuide.pdf