CITRIC ACID ANHYDROUS
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Here if you were looking for Citric Acid monohydrate
Citric acid is a weak organic acid but is a slightly stronger acid than
typical carboxylic acids. This is because the anion can be stabilized by
intermolecular hydrogen-bonding from other protic groups on Citric Acid.
Anhydrous means that the chemical has no water of crystallisation and is in a
dry, granulated form. It is easily soluble in water and ethanol, but is
insoluble in ether and chloroform.
Properties of citric acid anhydrous:
- CAS number: 77-92-9
- Appearance: white solid
- Formula: C6H8O7
- Density: 1.665 g/cm3
- Solubility in water: 133 g/100 ml (20C)
- Melting point: 153-154C
- Autoignition temperature: 1010C
- Explosion Limits: Lower:28 Upper: 2.29
Uses for Citric acid Anhydrous
- Citric acid's ability to chelate metals makes it useful in soaps and
laundry detergents. By chelating the metals in hard water, it lets these
cleaners produce foam and work better without need for water softening. In a
similar manner, citric acid is used to regenerate the ion exchange materials
used in water softeners by stripping off the accumulated metal ions as citrate
- Citric acid is the active ingredient in some bathroom and kitchen cleaning
solutions. A solution with a 6% concentration of citric acid will remove hard
water stains from glass without scrubbing. In industry it is used to dissolve
rust from steel.
- Citric acid is also used as a stop bath in photography. The developer is
normally alkaline, so a mild acid will neutralize it, increasing the
effectiveness of the stop bath when compared to plain water.
- Citric Acid is used to regenerate the ion exchange materials used in water
softeners by stripping off the accumulated metal ions as citrate complexes.
- When applied to hair, citric acid opens up the outer layer, also known as
the cuticle. While the cuticle is open, it allows for a deeper penetration into
the hair shaft. It can be used in shampoo to wash out wax and colouring from
- It is used in conjunction with sodium bicarbonate to make 'Bath bombs'
which react together and fizz when placed in water.
Health & Safety
Risk Phrases: R 36/37/38 Irritating to eyes, respiratory system
Safety Phrases: S 26 In case of contact with eyes, rinse immediately with
plenty of water and seek medical advice. S 37/39 Wear suitable gloves and