(Also known as: dinitrosol; dinitrol; 4,6-dinitro-O-cresol)
SUMMARY
DNOC is a multiuse pesticide. It is highly soluble in water and is moderately volatile. It is not expected to be persistent in the environment. DNOC is moderately toxic to fish, aquatic invertebrates, algae and earthworms. It has a low oral toxicity to honeybees. It is highly toxic to mammals if ingested and is an irritant.
Data alerts
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
Environmental fate
Ecotoxicity
Human health
Environmental fate Moderate alert: GUS: Transition state; Drainflow: Moderately mobile
Ecotoxicity Moderate alert: Fish acute ecotoxicity: Moderate; Fish chronic ecotoxicity: Moderate; Daphnia acute ecotoxicity: Moderate; Earthworms acute ecotoxicity: Moderate
Human health High alert: Mammals acute toxicity: High; Neurotoxicant
GENERAL INFORMATION
Description
A multi-use substance used to control insect and weed pests in agricultural crops.
Example manufacturers & suppliers of products using this active now or historically
Cerexagri Inc.
Blue Spruce
AH Marks
Pennwalt Holland
Example products using this active
Sinox
Trifocide
Trifrina
Detal
Dekrysil
Lipan
Nitrador
Formulation and application details
Usually supplied as soluble flakes, flowable concentrates and wettable powders
ENVIRONMENTAL FATE
Property
Value
Source; quality score; and other information
Interpretation
Solubility - In water at 20 °C (mg l⁻¹)
13000
K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data
High
Solubility - In organic solvents at 20 °C (mg l⁻¹)
251000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Toluene
-
58400
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Methanol
-
4030
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Hexane
-
514000
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
Acetone
-
Melting point (°C)
89
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
Boiling point (°C)
196
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
Degradation point (°C)
-
-
-
Flashpoint (°C)
-
-
-
Octanol-water partition coefficient at pH 7, 20 °C
P
2.45 X 1002
Calculated
-
Log P
2.39
K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data
Low
Fat solubility of residues
Solubility
-
-
-
Data type
-
-
-
Density (g ml⁻¹)
1.58
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
Dissociation constant pKa) at 25 °C
4.48
L3 L = Pesticide manuals and hard copy reference books / other sources 3 = Unverified data of known source
-
Weak acid
Vapour pressure at 20 °C (mPa)
8.7
K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data
Moderately volatile
Henry's law constant at 25 °C (Pa m³ mol⁻¹)
1.42 X 10-01
V3 V = ChemID online databases / IPCS INCHEM (ChemID; IPCS INCHEM ) 3 = Unverified data of known source
Moderately volatile
Maximum UV-vis absorption L mol⁻¹ cm⁻¹
-
-
-
Surface tension (mN m⁻¹)
-
-
-
Degradation
Property
Value
Source; quality score; and other information
Interpretation
General biodegradability
-
Soil degradation (days) (aerobic)
DT₅₀ (typical)
8.5
K4 K = Research datasets, e.g. Pandora, Demetra 4 = Verified data
Non-persistent
DT₅₀ (lab at 20 °C)
20
DW4 DW = Don Wauchope personal database for Pka data: Wauchope, R. D. and Edwards, J. Dissociation constants for pesticide active ingredients: a database and comparison with predicted values. MS in preparation 4 = Verified data
Non-persistent
DT₅₀ (field)
-
-
-
DT₉₀ (lab at 20 °C)
-
-
-
DT₉₀ (field)
-
-
-
DT₅₀ modelling endpoint
-
-
-
Note
General literature DT₅₀ range 4-13 days (R3)
Dissipation rate RL₅₀ on plant matrix
Value
-
-
-
Note
-
Dissipation rate RL₅₀ on and in plant matrix
Value
-
-
-
Note
-
Aqueous photolysis DT₅₀ (days) at pH 7
Value
10
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Moderately fast
Note
-
Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7
Value
-
-
-
Note
-
Water-sediment DT₅₀ (days)
83
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Moderately fast
Water phase only DT₅₀ (days)
25
Q3 Q = Miscellaneous internet resources 3 = Unverified data of known source
Slow
Soil adsorption and mobility
Property
Value
Source; quality score; and other information
Interpretation
Linear
Kd
-
H3 H = The US ARS pesticide properties database (click here ) 3 = Unverified data of known source
Moderately mobile
Koc
300
Notes and range
Other sources: 408 mL g⁻¹ (DW3)
Freundlich
Kf
-
-
-
Kfoc
-
1/n
-
Notes and range
-
pH sensitivity
-
Fate indices
Property
Value
Source; quality score; and other information
Interpretation
GUS leaching potential index
1.98
Calculated
Transition state
SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate
Value
6.26 X 10-02
Calculated
-
Note
-
Potential for particle bound transport index
Low
Calculated
-
Potential for loss via drain flow
Moderately mobile
Calculated
-
Bio-concentration factor
BCF (l kg⁻¹)
40
Q2 Q = Miscellaneous internet resources 2 = Unverified data of unknown source
Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242
Environmental fate
Human health
