LONZABAC BG

The non foaming biocide.
Broad spectrum activity against both gram positive and gram negative bacteria.
Registered as preservative for cosmetics within the EEC.
Safe at use concentrations.

1. Active matter
Poly (hexamethylenebiguanide) hydrochloride
1.1 CAS No.: 32289-58-0
1.2 EINECS No.: not applicable
1.3 UN No.: not applicable
1.4 INCI-Name: Polyaminopropyl Biguanide

2. Specifications
2.1 Appearance liquid, clear or practically clear, containing only
traces of insoluble particles
2.1 Appearance limpid to slightly opalescent liquid
2.2 Colour colourless to yellowish
2.3 Density 1.039 - 1.046
2.4 pH 4.0 - 5.0
2.5 Assay (dry extract) 19.0 – 21.0 %
2.6 Absorbance ( 1%) at 236 nm ≥ 400
2.7 Absorbance ratio 236 nm/220 nm: 1.2 – 1.6

3. Properties
3.1 Odour not specific
3.2 Viscosity (Brookfield, sp.1, 10 rpm, 20°C) 1.50 mPa·s
3.3 Average Molecular weight 219.72 x n (n = approx. 8)
3.4 Flash Point (Abel Pensky cc) > 100°C
3.5 Surface tension (1% aqueous solution) 57 mN/m
3.6 Ionogenicity cationic
3.7 Freeze thaw stability good
3.8 Solubility soluble in water
3.9 Compatibility compatible with nonionic surfactants and quaternary
ammonium compounds, incompatible with anionic
surfactants and strong alkalis.
3.10 Water 79.0 - 81.0 %
3.11 Freezing point 8.0 – 10.0 °C

4. Registrations
4.1 Europe Polymer according to Council Directive 92/32 EEC.
Listed as a preservative for cosmetics on the EEC positive list.

5. Use areas
Disinfectant for hospitals and food industry.
Preservative for cosmetics.

6. Recommendations to formulate
Incompatible with anionic detergents.

7. Storage
Product is supplied in polyethylene drums holding 200 kgs net. It has to be stored in the sealed
original drum. Product may cristallize when stored at temperatures below 15°C.
It can be stored in the sealed original packaging over a period of two years.

8. Regulatory information
refer to MSDS

9. Toxicological information
refer to MSDS

10. Ecological and ecotoxicological information
refer to MSDS