Sodium 5-nitroguaiacolate

Sodium 5-nitroguaiacolate	Last updated: 11/03/2021
(Also known as: sodium 2-methoxy-5-nitrophenoxide; Na 5NG)

GENERAL INFORMATION

Description

Plant growth stimulator for use on a wide range of food and ornamental crops

Example pests controlled

Example applications

Sugarbeet; Oilseed rape; Tomatoes; Cotton; Curcubits; Peppers; Potatoes; Strawberry

Efficacy & activity

Availability status

Current

Introduction & key dates

UK regulatory status

UK COPR regulatory status

Not approved

Date COPR inclusion expires

Not applicable

UK LERAP status

No UK approval for use

EC Regulation 1107/2009 (repealing 91/414)

EC Regulation 1107/2009 status

Approved

Dossier rapporteur/co-rapporteur

Netherlands/Greece

Date EC 1107/2009 inclusion expires

31/10/2022

EU Candidate for substitution (CfS)

Listed in EU database

Yes

Approved for use (✓) under EC 1107/2009 in the following EU Member States

ATAustria	BEBelgium	BGBulgaria	CYCyprus	CZCzech Republic	DEGermany	DKDenmark	EEEstonia	ELGreece
		✓	✓	✓				✓
ESSpain	FIFinland	FRFrance	HRCroatia	HUHungary	IEIreland	ITItaly	LTLithuania	LULuxembourg
✓			✓	✓
LVLatvia	MTMalta	NLNetherlands	PLPoland	PTPortugal	RORomania	SESweden	SISlovenia	SKSlovakia
			✓		✓			✓

Also used in

Chemical structure

Isomerism

Chemical formula

C₇H₆NNaO₄

Canonical SMILES

COC1=C(C=C(C=C1)[N+](=O)[O-])[O-].[Na+]

Isomeric SMILES

No data

International Chemical Identifier key (InChIKey)

KBRKFTKQRMYINW-UHFFFAOYSA-M

International Chemical Identifier (InChI)

InChI=1S/C7H7NO4.Na/c1-12-7-3-2-5(8(10)11)4-6(7)9;/h2-4,9H,1H3;/q;+1/p-1

2D structure diagram/image available?

Yes

General status

Pesticide type

Plant growth regulator

Substance group

Sodium nitrocompound

Minimum active substance purity

Known relevant impurities

EU dossier - None declared

Substance origin

Synthetic

Mode of action

Absorbed through leaves and translocated throughout the plant. Increases ATP translocation in cells and synthesis of proteins

CAS RN

67233-85-6

EC number

CIPAC number

718

US EPA chemical code

129075

PubChem CID

3017748

Molecular mass

191.12

PIN (Preferred Identification Name)

IUPAC name

sodium 2-methoxy-5-nitrophenolate

CAS name

3-hydroxy-4-methoxynitrobenzene sodium salt

Other status information

Relevant Environmental Water Quality Standards

Herbicide Resistance Classification (HRAC)

Not applicable

Herbicide Resistance Classification (WSSA)

Not applicable

Insecticide Resistance Classification (IRAC)

Not applicable

Fungicide Resistance Classification (FRAC)

Not applicable

Examples of recorded resistance

Physical state

Red crystalline powder

Formulations

Property

Value

Example manufacturers & suppliers of products using this active now or historically

Atonik
Atonik G

Example products using this active

Formulation and application details

ENVIRONMENTAL FATE

Property

Value

Source; quality score; and other information

Interpretation

Solubility - In water at 20 °C (mg l⁻¹)

1830

High

Solubility - In organic solvents at 20 °C (mg l⁻¹)

2.8

n-Heptane

0.29

Xylene

53000

Methanol

Ethyl acetate

Melting point (°C)

Decomposes before melting

Boiling point (°C)

Decomposes before boiling

Degradation point (°C)

145

Flashpoint (°C)

Octanol-water partition coefficient at pH 7, 20 °C

4.17 X 10⁰¹

Calculated

Log P

1.62

Low

Bulk density (g ml⁻¹)

Dissociation constant pKa) at 25 °C

8.21

Weak acid

Vapour pressure at 20 °C (mPa)

1.33 X 10^-02

Low volatility

Henry's law constant at 25 °C (Pa m³ mol⁻¹)

4.51 X 10^-04

Non-volatile

Maximum UV-vis absorption L mol⁻¹ cm⁻¹

Neutral solution: 210nm = 9194, 241nm = 6729, 342nm = 5689
Acidic solution: 210nm = 10120
Basic solution: 227nm = 9996

Surface tension (mN m⁻¹)

73.06

at 20°C 1g l⁻¹

Degradation

Property

Value

Source; quality score; and other information

Interpretation

General biodegradability

Soil degradation (days) (aerobic)

DT₅₀ (typical)

0.35

Non-persistent

DT₅₀ (lab at 20 °C)

0.35

Non-persistent

DT₅₀ (field)

DT₉₀ (lab at 20 °C)

0.90

Non-persistent

DT₉₀ (field)

DT₅₀ modelling endpoint

Note

EU dossier lab studies DT₅₀ range 0.1-0.6 days, DT₉₀ range 0.4-2.1 days

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

Moderately fast

Note

Data for continuous simulated sunlight and equivalent to a DT₅₀ of 3 summer days at 30 deg N

Aqueous hydrolysis DT₅₀ (days) at 20 °C and pH 7

Value

Stable

Note

Stable at pH 4 to pH 9 at 50 °C, 5days

Water-sediment DT₅₀ (days)

3.2

Fast

Water phase only DT₅₀ (days)

2.9

Moderately fast

Soil adsorption and mobility

Property

Value

Source; quality score; and other information

Interpretation

Linear

K_d

K_oc

Notes and range

Freundlich

K_f

10.6

Slightly mobile

K_foc

620

¹/_n

0.918

Notes and range

EU dossier K_f range 3.6-19.2 ml/g, K_foc range 166-1350 mL g⁻¹, ¹/_n range 0.84-1.00, Soils=4

pH sensitivity

Fate indices

Property

Value

Source; quality score; and other information

Interpretation

GUS leaching potential index

-0.55

Calculated

Low leachability

SCI-GROW groundwater index (μg l⁻¹) for a 1 kg ha⁻¹ or 1 l ha⁻¹ application rate

Value

4.02 X 10^-05

Calculated

Note

Potential for particle bound transport index

Low

Calculated

Potential for loss via drain flow

Slightly mobile

Calculated

ECOTOXICOLOGY

Property

Value

Source; quality score; and other information

Interpretation

Bio-concentration factor

BCF (l kg⁻¹)

Low risk

Based on LogP < 3

Low risk

CT₅₀ (days)

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

716

Rat

Moderate

Mammals - Short term dietary NOEL

(mg kg⁻¹)

(ppm diet)

Mammals - Chronic 21d NOAEL (mg kg⁻¹ bw d⁻¹)

Birds - Acute LD₅₀ (mg kg⁻¹)

2067

Colinus virginianus

Low

Birds - Short term dietary (LC₅₀/LD₅₀)

1830 mg kg bw⁻¹ day⁻¹

Colinus virginianus

Birds - Chronic 21d NOEL (mg kg⁻¹ bw d⁻¹)

Fish - Acute 96 hour LC₅₀ (mg l⁻¹)

37.4

Oncorhynchus mykiss

Moderate

Fish - Chronic 21 day NOEC (mg l⁻¹)

10.9

Oncorhynchus mykiss

Low

Aquatic invertebrates - Acute 48 hour EC₅₀ (mg l⁻¹)

71.1

Daphnia magna

Moderate

Aquatic invertebrates - Chronic 21 day NOEC (mg l⁻¹)

Aquatic crustaceans - Acute 96 hour LC₅₀ (mg l⁻¹)

Sediment dwelling organisms - Acute 96 hour LC₅₀ (mg l⁻¹)

Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l⁻¹)

Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg⁻¹)

Aquatic plants - Acute 7 day EC₅₀, biomass (mg l⁻¹)

Non-target plants

> 5.0

range of tested plant species
Vegetative vigour, ER₅₀
as L product ha⁻¹ (Atonik: conc 1 g l⁻¹)

> 5.0

range of tested plant species
Seedling emergence, ER₅₀
as L product ha⁻¹ (Atonik: conc 1 g l⁻¹)

Algae - Acute 72 hour EC₅₀, growth (mg l⁻¹)

6.2

Scenedemus subspicatus

Moderate

Algae - Chronic 96 hour NOEC, growth (mg l⁻¹)

Honeybees (Apis spp.)

Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

> 100

Low

Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

131.6

Low

Unknown mode acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Bumblebees (Bombus spp.)

Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Mason bees (Osmia spp.)

Contact acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Oral acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg bee⁻¹)

Other pollinators (1)

Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)

Mode of exposure

Other pollinators (2)

Acute LD₅₀ (worst case from 24, 48 and 72 hour values - μg insect⁻¹)

Mode of exposure

Earthworms - Acute 14 day LC₅₀ (mg kg⁻¹)

> 11.8

Moderate

Earthworms - Chronic NOEC, reproduction (mg kg⁻¹)

Other soil macro-organisms

Acute LC₅₀ (mg kg⁻¹)

Chronic NOEC (mg kg⁻¹)

Other arthropod (1)

LR₅₀ g ha⁻¹

% Effect

Other arthropod (2)

LR₅₀ g ha⁻¹

% Effect

Soil micro-organisms

Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect

Dose: 4.0 mg product/kg soil 28 days

Mesocosm study data

NOEAEC mg l⁻¹

HUMAN HEALTH AND PROTECTION

General

Property

Value

Source; quality score; and other information

Interpretation

Threshold of Toxicological Concern (Cramer Class)

High (class III)

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

716

Rat

Moderate

Mammals - Dermal LD₅₀ (mg kg⁻¹ body weight)

2000

Rabbit

Mammals - Inhalation LC₅₀ (mg l⁻¹)

> 2.38

Rat

Other Mammal toxicity endpoints

ADI - Acceptable Daily Intake (mg kg⁻¹ bw day⁻¹)

0.003

Dog SF=100

ARfD - Acute Reference Dose (mg kg⁻¹ bw day⁻¹)

0.045

Rabbit SF=100

AAOEL - Acute Acceptable Operator Exposure Level (mg kg⁻¹ bw day⁻¹)

AOEL - Acceptable Operator Exposure Level - Systemic (mg kg⁻¹ bw day⁻¹)

0.007

Dog SF=100

Dermal penetration studies (%)

100

default

Dangerous Substances Directive 76/464

Exposure Routes

Public

Acceptable risk for bystanders

Occupational

Acceptable risk for operators with PPC
Acceptable risk for other workers

MRLs

European

EU MRL pesticide database

Notes

Drinking Water Standards

Drinking Water MAC (μg l⁻¹)

Health issues

Specific human health issues

Carcinogen

Genotoxic

Endocrine disruptor

; ; ; ;

Reproduction / development effects

Acetyl cholinesterase inhibitor

Neurotoxicant

Respiratory tract irritant

Skin irritant

Skin sensitiser

No data found

Eye irritant

Phototoxicant

No data found

General human health issues

No further information available

Handling issues

Property

Value and interpretation

General

Explosive potential

CLP classification 2013

Health: H302, H318, H319
Handling: H242
Environment: H411

EC Risk Classification

Xn - Harmful: R22
Xi - Irritant: R36

EC Safety Classification

WHO Classification

NL (Not listed)

UN Number

Waste disposal & packaging

TRANSLATIONS

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sodium 5-nitroguaiacolate

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Record last updated:	11/03/2021
Contact:	aeru@herts.ac.uk
Please cite as:	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