BARQUAT PQ

Barquat PQ
The non foaming biocide.
For use in water circuits and swimming pools.
Safe at use concentrations.
1. Active matter
N,N-Dimethyl-2-hydroxypropylammonium chloride polymer

(C5 H12 N O)n + Cl - 

1.1 CAS No.: 25988-97-0
1.2 EINECS No.: not applicable
1.3 UN No.: 3082
2. Specifications
2.1 Colour (Apha) 250 max.
2.2 PH (10% acqueous solution) 7.7 - 8.7
2.3 Active ingredient (100% minus amount of water) 59.0 - 61.0 %
2.4 Density aerometer (20°C) 1.17 - 1.19
3. Properties
3.1 Appearance colourless to slightly yellow liquid
3.2 Odour odourless to slight smell of ammonia
3.3 Viscosity (Brookfield, sp. 2, 10 rpm)
3.3.1 at 5°C 2500 mPa· s
3.3.2 at 23°C 1900 mPa· s
3.4 Average Molecular weight 20‘000
3.5 Flash point (Abel Pensky cc) > 100° C
3.6 Surface tension (1% aqueous solution) 56 mN/m
3.7 Ionogenicity cationic
3.8 Freeze thaw stability good
3.9 Solubility soluble in water
3.10 Compatibility compatible with inorganic builders and nonionic
surfactants -not compatible with anionics.
3.11 Setting point < 5° C
3.12 Foaming property non foaming
4. Registrations
4.1. Europe
4.1.1 Switzerland BAG T No. 89300 / Toxicity class: none (need not to be classified)
4.2. USA Toxic Substances Control Act (TSCA) Inventory
5. Antimicrobial efficacy
5.1 BACTERIA
The bacteriostatic efficacy has been tested according to the DGHM test procedure.
Result: Inhibitory concentration, carried out in
Strain: a) nutrient solution (CSL) b) in ringer solution
Staph.aureus ≥ 500 ppm ≥ 0.5 ppm
Pseud.aeruginosa ≥ 500 ppm ≥ 5.0 ppm
Cand. albicans ≥ 500 ppm ≥ 50 ppm
Escherichia coli ≥ 50 ppm ≥ 0.5 ppm
5.2 ALGAE
5.2.1 Algaestatic efficacy according to OECD 201:
Certificate: Dr.U.Noack, Rüdesheim (D)
Strain tested: Scenedesmus subspicatus CHODAT
Results (after 72 hours):
EB
C50 0.18 ppm
EμC50 0.18 ppm
EB
C0 0.032 ppm
EμC0 0.1 ppm
5.2.2 Algaecidal efficacy according to method A.Kuhl
(Qualitative growth control in presence of nutrient solution)
Certificate: Lab CSPE, Basel
Strain: Chlorella vulgaris
Result: EC100: 5 - 7 ppm
5.2.3 Certificate: University of Barcelona
Strain: Chlorella vulgaris
Result: Algaestatic concentration: 0.5 ppm
Algaecidal concentration: 1.0 ppm
6. Use areas
Water treatment for cooling systems and air washers.
Algicide for swimming pools.
7. Recommendations to formulate
Incompatible with anionic detergents.
8. Analytical procedure
Methods available upon request.
9. Storage
Product is supplied in polyethylene drums holding 190 kgs net.
It can be stored in the sealed original packaging over a period of two years.
10. Regulatory information
refer to MSDS
11. Toxicological information
refer to MSDS
12. Ecological and ecotoxicological information
refer to MSDS