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SYNONYMS: BNPD; Bronopol; Bioban; Myacide
Molecular Formula: C3H6BrNO4
Molecular Weight: 199.99
Appearance White or similar white crystal powder
Odor Odorless or light characteristically mild
Assay, % >=99.0
Melting point 0 124~129
Dissociative Bromine, % <=0.3
Loss on drying , % <=0.3
Ash, % <=0.3
Solubility Very soluble in water and in lower alcohols
The active ingredient of ALT-BNPD is 2-Bromo-2-Nitropropane-1,3-Diol or Bronopol. It is listed in the USA and the EU respectively as an approved cosmetic preservative at levels up to 0.1%.
ALT-BNPD is an excellent preservative for both leave-on and rinse-off products such as creams, lotions, shampoos, rinses, wipes and towelettes. The recommended use level is 0.02~0.05%.
1) Its optimum pH range of use is 4~8. It should be added as the last ingredient and at the lowest temperature (<=500) if possible.
2) Conditions of high temperatures, alkaline and sunlight will cause degradation of the active ingredient.
3) The presence of a few agents such as sulfhydryl compounds, sulfite, hyposulfite, aluminous and ferreous materials will lead to loss of activity. The
use of secondary amines should be avoided in formulations.
Store in a well-ventilated, cool, dry area, out of direct sunlight. Keep containers tightly closed when not in use.
Standard packaging includes the following:
25kg net weight plastic pail
Period of validity