CITRIC ACID is one of my favourite ingredients.
It occurs naturally in citrus fruits and is widely used as an acidity regulator, flavouring and preservative in food and drinks. It can also replace many of our domestic cleaning products. It is, in fact, a viable alternative to limescale remover, dishwasher rinse-aid, fabric softener and even conditioner for your hair!!!
It's an excellent product with which to treat tap water, helping to improve the effectiveness of soaps and laundry detergents.
To obtain your citric acid "magic potion" (recipe here) just mix the powder with some water, preferably distilled (if you have a dehumidifier, the water collected from it is perfect) as it allows the solution to work more effectively. The quantity of the powder depends on the water hardness in your area, particularly if there is a lot of lime in the water. (It is always a good idea to know the pH value of your water).
It is excellent as a dishwasher rinse-aid because commercial rinse-aid tends to leave deposits on our tableware (to make them shine) and to end up in our food and drinks as well. So, swapping commercial rinse-aid with something edible like citric acid is the best answer.
As a fabric softener, citric acid excels because it neutralises the alkalinity of laundry detergent. It doesn't act like a commercial softener, that essentially applies a thin, waxy, scented coating to your laundry, which makes your clothes feel softer but which contains a cocktail of non-renewable petroleum-based chemicals, that are not easily biodegradable and can become highly toxic to aquatic life, and even toxic and allergenic for people with sensitive skin. For this reason, it is strongly recommended not to use fabric softener on newborn babies’ clothes.
As a softener citric acid just acts as a pH adjuster, bringing the laundry alkaline pH closer to our natural skin pH.
Many people use WHITE VINEGAR as a fabric softener. Vinegar is an effective, natural product for cleaning, but it should only be used in moderation.
Tests on acetic acid's biodegradability have established that vinegar has an impact on the environment 53 times greater than citric acid’s!
These tests, following the ECOLABEL requirements (established in 1992 and recognised across Europe and worldwide, the EU Ecolabel is a label of environmental excellence that is awarded to products and services meeting high environmental standards throughout their life-cycle), showed that to neutralise 1% of acetic acid (vinegar) 1667 litres of water are required, while for the citric acid just 31,25 litres. On the EU website, you can find the criteria, and the numbers of the DID List (Detergent Ingredients Database) used to calculate it.
Also Dott. Fabrizio Zago's* studies on both products using washing-machine showed that acetic acid (vinegar) is more aggressive and corrosive than citric acid when it comes in contact with nickel and other metal. In fact, the wastewater of a washing machine used with acetic acid carries 12 times more metals than the one with citric acid.
When I discovered this, I was surprised and concerned as I’d always thought that vinegar was a natural product that biodegrades easily. In fact, natural does not mean 100% biodegradable, and we have to do our best by using products that are less dangerous and toxic for us, our homes and our mother earth!
Also, I would like to underline that, usually, vinegar comes in small glass bottles or bigger plastic containers causing a more significant environmental impact considering production, shipping and waste disposal.
*Fabrizio Zago is an awarded chemist: after gaining a bachelor's degree in Chemistry, he worked as a manager of a detergents and cosmetics factory in Italy and since 1987 as an independent consultant.
Since 2001 he has been a member for the detergents and cosmetics sector of UEAPME (the European Association of Craft, Small and Medium-sized Enterprises) based in Bruxelles, Belgium. Here he worked as a 'technical expert' for the working groups that were developing the criteria to be assigned to the Ecolabel. Since 2003 he has been a member of the ICEA (the Ethical and Environmental Certification Institute) in both the cosmetic and detergent sectors.
He is the authour of BIODIZIONARIO, a handy source to understand the harmfulness of the ingredients (INCI) contained in beauty and cleaning products.
For more info about citric acid have a look at the following website.