| Chemical |
2,2-dibromo-2-cyanoacetamide |
| CAS-number : |
10222-01-2 |
| |
| Synonyms : |
| Acetamide, 2,2-dibromo-2-cyano- |
| DBNPA, dibromonitrilopropionamide |
| |
| Sumformula of the chemical : |
| C3H2Br2N2O |
| EINECS-number : |
| 2335397 |
| |
| Purity, % : |
| 99 |
WPSREG 1993 |
| |
| Known impurities : |
monobromo-2-cyanoacetamide (MBNPA) (CAS nr 113-55-9);
dibromoacetonitrile (DBNPA) (CAS nr 3252-43-5);
2,2-dibromopropanediamide (CAS nr 73003-80-2);
2-cyanoacetamide, CAM (CAS nr 107-91-5);
all together <1%
(WPSREG 1993) |
| |
| Uses : |
The active substance effective on bacteria, fungi, yeasts and
algae and used in many slimicides for water systems (WPSREG
1993).
|
| |
| Way to effect : |
The toxic effect on the substance is probably based on reaction
with cell wall proteins and on inactivation of the enzyme
system (WPSREG 1993).
|
| |
| State and appearance : |
solid (WPSREG 1993).
|
| |
| Molecular weight : |
241.87 |
| |
| Density, kg/m3 : |
| 1037 |
1.37 g/ml (solid) |
| 1270 |
1.27 g/ml (20% solution in polyglycol) |
| |
WPSREG 1993 |
| |
| Vapor pressure, mmHg : |
| 0.00002 |
266 x 10-5 Pa (25 C), |
| 0.0002 |
266 x 10-4 Pa (40 C), |
| |
WPSREG 1993 |
| |
| Water solubility, mg/l : |
| 15000 |
1.5 g/100 ml (25 C), WPSREG 1993 |
| |
| pH : |
| 6.8 |
saturated water |
| |
solution, |
| |
WSPREG 1993 |
| |
| Log octanol/water coefficient, log Pow : |
| 6.1 |
WPSREG 1993 |
| |
| Other physicochemical properties : |
Solubility in organic solvents:
ethanol (20 C) 25 g/100 g
acetone (25 C) 35 g/100 g
benzene (20 C) < 1.0 g/100 g
carbontetrachloride (20 C) 1 g/100 g
(WPSREG 1993).
Oxidizing properties:
A strong Dow Antimicrobial 7287 product oxidizes most metals
(e.g. mild steel, stainless steel "304", nickel "200",
aluminium) (WPSREG 1993).
|
| |
| Photochemical degradation in water : |
T99 = c. 28d, in sunlight in water (WPSREG 1993).
|
| |
| Hydrolysis in water : |
T 1/2 = 89d (pH 3.9), T 1/2 = 8.8 (pH 7.3) (WPSREG 1993).
|
| |
| Aerobic degradation in water : |
T5 = 14d, mineralisation (WPSREG 1993).
|
| |
| Bioconcentration factor, fishes : |
| 17 |
17-92 (BBNPA or DBNPA together with its degradation |
| 92 |
products) (WPSREG 1993). |
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 118 |
orl-guinea pig, female |
| 235 |
orl-rat, male |
| |
WPSREG 1993 |
| |
| Other information of mammals : |
Subchronic, rat: LOEC 42-75 mg kg-1 d-1,
NOEC 10-17 mg kg-1 d-1
(WPSREG 1993).
|
| |
| Effects on microorganisms : |
For the microbes of the paper machine LC50 = 2.5 mg/l (WPSREG
1993).
|
| |
| EC50 values to algae, mg/l : |
| 0.3 |
96hr, Selenastrum capriocornutum |
| |
WPSREG 1993 |
| |
| EC50 values to crustaceans, mg/l : |
| 0.5 |
0.5 - 0.9, 48hr, Daphnia magna, |
| 0.9 |
|
| 2.5 |
48hr, Daphnia magna, the product |
| |
Dow Antimicrobial 7287, |
| |
WPSREG 1993 |
| |
| LOEC values to crustaceans, mg/l : |
| 0.12 |
21d, Daphnia magna, number of progeny |
| 0.16 |
21d, Daphnia magna, number of progeny |
| |
WPSREG 1993 |
| |
| NOEC values to crustaceans, mg/l : |
| 0.07 |
21d, Daphnia magna, number of progeny |
| 0.07 |
21d, Dapnia magna, number of broods |
| |
WPSREG 1993 |
| |
| LC50 values to fishes, mg/l : |
| 1 |
96hr, Salmo gairdneri |
| 1.3 |
96hr, Lepomis macrochirus |
| 0.95 |
0.95 - 2.90, 96hr, Cyprinodon variegatus (sea water) |
| 2.9 |
|
| 1.08 |
96hr, Brachydanio rerio |
| 1.4 |
1.4 - 1.8, 96hr, Pimephales promelas |
| 1.8 |
|
| 1.4 |
96hr, Ictalurus melas |
| 0.88 |
96hr, Ictalurus punctatus |
| |
WPSREG 1983 |
| |
-- |
| 7.6 |
7.6 - 10, 96hr, Cyprinodon variegatus (sea water) |
| 10 |
|
| 5.4 |
96hr, Brachydanio rerio |
| 6.8 |
96hr, Pimephales promelas |
| 7 |
96hr, Ictalurus melas |
| 4.4 |
96hr, Ictalurus punctatus |
| |
the product Dow Antimicrobial |
| |
WPSREG 1993 |
References |
| 3119 | WPSREG.
Application for registration of wood preservatives/
slimicides.
National Board of Waters and the Environment,
Chemicals Control Unit.
|
