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Piroctone olamine

Piroctone olamine is a broad spectrum of microbiocide/microbiostat, may be used in formulating antidandruff shampoo, hair keep and hair care, soap, etc.. It is also used as preservative and thickening agent.
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CHEMICAL NAME? 1-Hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-(1H)pyridinone,2-aminoethanol salt
CAS No. 68890-66-4
EINECS NO.272-574-2
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CHARACTERISTICS?
Solubility:Freely soluble in 10% ethanol in water; soluble in solution containing surfactants in water or in 1%-10% ethanol; slightly soluble in water and in oil. The solubility in water varies by pH value, and is a litter larger in neutral or weak basic solution than in acid solution.
pH: 8.5-10.0 (1% suspension in water, 20C)
pKa: 7.4
Thickening: Piroctone olamine increases the viscosity of many surfactant system.
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STABILITY?
a) pH: Stable in solution of pH 3 to pH 9.
b) Heat: Stable to heat, and to short time of high temperature above 80°C Piroctone olamine in shampoo of pH 5.5-7.0 remains stable after one year of storage at a temperature over 40°C
c) Light: Decompose under direct ultraviolet radiation. So it should be protected from light.
d) Metals: An aqueous solution of piroctone olamine degrades in the presence of cupric and ferric ions.
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Compatibility?
Piroctone olamine is compatible with many cosmetic ingredients, especially with cationic surfactants (tetramine salt) and cationic active components. In some cases, this re-mixture increase the solubility of piroctone olamine.
SPECIFICATION Appearance: White or slightly yellow crystalline powder
Identification: Positive
Content: Not less than 99%
Melting point: 130 - 135°C
Loss on drying: Not more than 2.0%
Ash (SO4): Not more than 0.2%
pH value
(1% aq. solu. 20°C ): 8.5 - 10.0
Heavy metals: Not more than 20ppm
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APPLICATION Antidandruff (hair keep): 0.1-0.8% active ingredient.
Antidandruff (fixing agent): 0.05-0.2% active ingredient.
Antidandruff (hair emulsion): 0.1-0.3% active ingredient.
Antidandruff (hair supporting): 0.05-0.1%active ingredient.
Preservative: 0.2-0.5% active ingredient.
Smell-eliminating agent: 0.2-0.5% active ingredient.
Smell-eliminating scented soap: 0.2-0.5% active ingredient.
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PACKAGING:25kg drum