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There are several types of hair conditioner ingredients, differing in composition and functionality: Acidifiers are acidity regulators that maintain the conditioner's pH at about 3.5. In contact with an acidic environment, the hair's somewhat scaly surface tightens up as the hydrogen bonds between the keratin molecules are strengthened. [10]
These chemicals were discovered to be carcinogenic, leading to their replacement with salicylic acid; therefore, what's now marketed as "original formula" Is not the same product. [1] Frequent Anti-Dandruff is formulated for daily use. 2 in 1 Gentle Action contains a conditioner Activating Shampoo for thinning hair. [ 2 ]
Sulfuric(IV) acid (United Kingdom spelling: sulphuric(IV) acid), also known as sulfurous (UK: sulphurous) acid and thionic acid, [citation needed] is the chemical compound with the formula H 2 SO 3. Raman spectra of solutions of sulfur dioxide in water show only signals due to the SO 2 molecule and the bisulfite ion, HSO − 3 . [ 2 ]
For example, 10% oleum can also be expressed as H 2 SO 4 ·0.13611SO 3, 1.13611SO 3 ·H 2 O or 102.25% sulfuric acid. The conversion between % acid and % oleum is: % = + % For x = 1 and y = 2 the empirical formula H 2 S 2 O 7 for disulfuric (pyrosulfuric) acid is obtained. Pure disulfuric acid is a solid at room temperature, melting at 36 °C ...
The sulfur trioxide is absorbed into 97–98% H 2 SO 4 to form oleum (H 2 S 2 O 7), also known as fuming sulfuric acid or pyrosulphuric acid. The oleum is then diluted with water to form concentrated sulfuric acid. H 2 SO 4 + SO 3 → H 2 S 2 O 7 H 2 S 2 O 7 + H 2 O → 2 H 2 SO 4
A typical mixture is 3 parts of concentrated sulfuric acid and 1 part of 30 wt. % hydrogen peroxide solution; [1] other protocols may use a 4:1 or even 7:1 mixture. A closely related mixture, sometimes called "base piranha", is a 5:1:1 mixture of water, ammonia solution ( NH 4 OH , or NH 3 (aq) ), and 30% hydrogen peroxide.
The decomposition products can include sulfur, sulfur dioxide, hydrogen sulfide, polysulfanes, sulfuric acid and polythionates, depending on the reaction conditions. [6] Anhydrous methods of producing the acid were developed by Max Schmidt: [6] [7] H 2 S + SO 3 → H 2 S 2 O 3 Na 2 S 2 O 3 + 2 HCl → 2 NaCl + H 2 S 2 O 3 HSO 3 Cl + H 2 S → ...
For example, acetic acid is a weak acid which has a = 1.75 x 10 −5. Its conjugate base is the acetate ion with K b = 10 −14 / K a = 5.7 x 10 −10 (from the relationship K a × K b = 10 −14 ), which certainly does not correspond to a strong base.
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