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sodium chlorate
** soda chlorate ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for sodium chlorate

Description: A non-selective herbicide for use mainly in non-cropping areas and for total vegetation clearance

Example pests controlled: Total vegetation including Morning glory, Johnsongrass, St Johnswort, Canada thistle

Example applications: Non-cropped areas includings roadsides, fenceways, ditches, etc; Defoliant & dessicant for cotton, corn, flax, soybeans, sorghum, peas & beans, rice

Efficacy & activity: -

Availability status: Current

Introduction & key dates: circa 1910

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur France
Date inclusion expires Expired
EU Candidate for substitution (CfS) Not applicable
Listed in EU database No

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Also used in: USA

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism None
Chemical formula ClNaO3
Canonical SMILES [O-]Cl(=O)=O.[Na+]
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) YZHUMGUJCQRKBT-UHFFFAOYSA-M
International Chemical Identifier (InChI) InChI=1S/ClHO3.Na/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1
2D structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Herbicide, Soil sterilant
Substance group Inorganic compound
Minimum active substance purity 970-985 g/kg
Known relevant impurities EU dossier - None declared
Substance origin Synthetic
Mode of action Broad spectrum, systemic which translocates to all parts of the weed. Phytoxic to all plants.
CAS RN 7775-09-9
EC number 231-887-4
CIPAC number 7
US EPA chemical code 073301
PubChem CID 516902
Molecular mass (g mol-1) 106.44
PIN (Preferred Identification Name) -
IUPAC name sodium chlorate
CAS name chloric acid sodium salt
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not known
Herbicide Resistance Classification (WSSA) -
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state White powder
Related substances & organisms -

Formulations:
Property Click here for information on the general product and branding information used on this site Value
Example manufacturers & suppliers of products using this active now or historically
  • Doff Portland
  • Nomix Environ
  • Bayer
  • ICI Plant Protection
Example products using this active
  • Doff Sodium Chlorate Weed Killer
  • Harvest-Aid
  • Kusatol
  • Leafex
  • Tumbleaf
UK LERAP status None
Formulation and application details Often supplied as dusts, granules or pre-mixed spray.


ENVIRONMENTAL FATE

for sodium chlorate

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 650000 A5 High
Solubility - In organic solvents at 20oC (mg l-1) Insoluble A5 - Most organic solvents -
Melting point (oC) 255 A5 -
Boiling point (oC) Decomposes before boiling A4 -
Degradation point (oC) 260 A3 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 1.26 X 10-03 Calculated -
Log P -2.9 A5 Low
Bulk density (g ml-1)/Specific gravity 2.499 L3 -
Dissociation constant (pKa) at 25oC -2 A4 -
Note: Very strong acid
Vapour pressure at 20oC (mPa) 5.2 X 10-06 A2 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 5.2 X 10-09 A3 - Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 6.47 Calculated High leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Click here for a note on the limitations of the SCI-GROW index Value 2.50 X 10+01 Calculated -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated Medium
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) 72.9 A5 at 20oC, 99.4% -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 200 F3 Persistent
DT50 (lab at 20oC) 143.3 A5 Persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note EU dossier lab studies DT50 range 46.7-314.6 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 Stable A5 -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A5 -
Note Not senstive to pH
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - F3 Very mobile
Koc 10
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for sodium chlorate

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) Low risk A5 Based on LogP < 3 Low potential
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 5000 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) 2510 A5 Anas platyrhynchos Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 10000 G2 Unknown species Low
Fish - Chronic 21 day NOEC (mg l-1) 500 A5 Danio rerio Low
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 919.3 A5 Daphnia magna Low
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 500 A5 Daphnia magna Low
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) 134 A5 Lemna minor Low
Non-target plants 386.7 A5 cucmis sativus
Vegetative vigour, ER50
as kg/ha
-
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 1595 A5 Scenedemus subspicatus Low
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) > 116 A5 Low
Oral acute LD50 (worst case from 24 , 48 and 72 hour values - μg bee-1) > 75 A5 Moderate
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) > 750 A5 Moderate
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 84400 Mortality
A5 Typhlodromus pyri
-
% Effect - - -
Other arthropod (2) LR50 g ha-1 250600 Mortality
A5 Aphidius rhopalosiphi
-
% Effect - - -
Soil micro-organisms Nitrogen mineralisation: -47% effect
Carbon mineralisation: -10.4% effect
A5
Dose: 1.67 g/kg soil, 100 days
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for sodium chlorate

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class High (class III) - -
Mammals - Acute oral LD50 (mg kg-1) > 5000 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 3.9 A5 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) None allocated A5 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) None allocated A5 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.35 A5 Rat, SF=200 -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Routes Public Negligible risk for bystanders
Occupational PPE/PPC required for operators
Negligible risk to other farm workers
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Genotoxic Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

A0; B0; C0; D0; E0

-

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

General human health issues Possible blood and kidney toxicant
Ingestion causes stomach upset, dizziness, breathlessness, blue discolouration of the skin, heart problems and coma
Key: Genotoxicity
A: Chromosome aberration (EFSA database)
B: DNA damage/repair (EFSA database)
C: Gene mutation (EFSA database)
D: Genome mutation (EFSA database)
E: Unspecified genotoxicity type (miscellaneous data source)
0: No data
1: Positive
2: Mixed/ambiguous results
3: Negative
Key: Other
: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data found

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes Oxidising agent
Explosive under certain conditions
IMDG Transport Code is usually 5.1
CLP classification 2013 Health: H302
Handling: H271
Environment: H411
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R22
H - Handling risks: R9
N - Dangerous for the environment: R51/53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S13, S17, S46, S61
WHO Classification II - Moderately hazardous
UN Number 1495
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group II (medium danger)


TRANSLATIONS

for sodium chlorate

Language Name
English sodium chlorate
French chlorate de sodium
German Natriumchlorat
Danish -
Italian -
Spanish clorato de sodio
Greek -
Slovenian -
Polish chloran (V) sodu
Swedish -
Hungarian -
Dutch natrium chloraat

Record last updated: Friday 14 September 2018
Contact: aeru@herts.ac.uk