1,2-dichloropropane (Ref: ENT 15406 )-Pesticide database

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1,2-dichloropropane (Ref: ENT 15406 )

(Also known as: propylene dichloride; 1,2-DCP; dichloro-1,2-propane; dichloropropane; PDC)

Dichlorpropane is a multi-use substance with insecticidal and fungicidal activity. It is considered obsolete but may be used in some countries. It is a volatile organic compound (VOC) which is highly soluble in water. It can be very persistent in soil systems depending on environmental conditions and it also has poitenrtial to leach to groundwater. 1,2-dichloropropane tends to have a moderate to low toxicity to biodiversity but there are considerable gaps in data. It is moderately toxic to mammals via the oral route and there are concerns regarding its potential to cause reproduction/developmental effects in humans. It is also a recognised irritant.

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 High alert: Persistent; GUS: High leachability; Drainflow: Mobile	Ecotoxicity Moderate alert: Daphnia acute ecotoxicity: Moderate	Human health High alert: Endocrine distrupter; Reproduction/development effects

GENERAL INFORMATION

Chemical with a range of agricultural applications including uses a soil fumigant to control nematodes and as an insecticide for stored grain.

Example pests controlled

Nematodes; Flour beetles; Grain beetles

Example applications

Agricultural crops; Stored grain

Efficacy & activity

Availability status

Considered obsolete but may be available in some countries

Introduction & key dates

1925, first reported

UK regulatory status

UK COPR regulatory status

Date COPR inclusion expires

UK LERAP status

No UK approval for use

EC Regulation 1107/2009 (repealing 91/414)

EC Regulation 1107/2009 status

Dossier rapporteur/co-rapporteur

Date EC 1107/2009 inclusion expires

EU Candidate for substitution (CfS)

Listed in EU database

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

Approved for use (✓) under EC 1107/2009 by Mutual Recognition of Authorisation and/or national regulations in the following EEA countries

ISIceland	NONorway

Additional information

Chemical structure

Dichloropropane has four isomers (1,1-, 1,2, 1,3- and 1,4-1,2-dichloropropane). 1,2-dichloropropane tends to be the main one used in the agricultrual context and is itself chiral.existing in two enantiomeric forms (S- and R-)

Chemical formula

Canonical SMILES

Isomeric SMILES

International Chemical Identifier key (InChIKey)

KNKRKFALVUDBJE-UHFFFAOYSA-N

International Chemical Identifier (InChI)

InChI=1S/C3H6Cl2/c1-3(5)2-4/h3H,2H2,1H3

2D structure diagram/image available?

Insecticide, Nematicide, Fumigant, Other substance

Other constituent type

Solvent, Chemical intermediate

Substance groups

Organochloride insecticide; Fumigant insecticide; Fumigant nematicide

Minimum active substance purity

Known relevant impurities

Substance origin

US EPA chemical code

CLP index number

PIN (Preferred Identification Name)

rac-(2R)-1,2-dichloropropane

1,2-dichloropropane

1,2-dichloropropane

Other status information

Relevant Environmental Water Quality Standards

Herbicide Resistance Classification (HRAC)

Herbicide Resistance Classification (WSSA)

Insecticide Resistance Classification (IRAC)

Fungicide Resistance Classification (FRAC)

Examples of recorded resistance

Colourless liquid

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

Scott Speciality Gases

Example products using this active

Nematox
Dowfume EB-5

Formulation and application details

ENVIRONMENTAL FATE

Source; quality score; and other information

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

F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
3 = Unverified data of known source

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

F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
3 = Unverified data of known source

F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
3 = Unverified data of known source

Melting point (°C)

L3 L = Pesticide manuals and hard copy reference books / other sources
3 = Unverified data of known source

Boiling point (°C)

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

AC3 AC = EC Joint Research Centre ESIS European Chemical Substance Information Systems including EINECS, now integrated with the database provided by the European Chemicals Agency (ECHA) (click here )
3 = Unverified data of known source

Fat solubility of residues

Likely to be soluble

Q3 Q = Miscellaneous data from online sources
3 = Unverified data of known source

Based on chemical group

Q3 Q = Miscellaneous data from online sources
3 = Unverified data of known source

Density (g ml⁻¹)

AC3 AC = EC Joint Research Centre ESIS European Chemical Substance Information Systems including EINECS, now integrated with the database provided by the European Chemicals Agency (ECHA) (click here )
3 = Unverified data of known source

Dissociation constant pKa) at 25 °C

Vapour pressure at 20 °C (mPa)

1.94 X 10⁰⁶

AC3 AC = EC Joint Research Centre ESIS European Chemical Substance Information Systems including EINECS, now integrated with the database provided by the European Chemicals Agency (ECHA) (click here )
3 = Unverified data of known source

Highly volatile

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

V3 V = ChemID Online Databases; Chemspider; PubChem. (ChemID )
3 = Unverified data of known source

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

Surface tension (mN m⁻¹)

Source; quality score; and other information

General biodegradability

Soil degradation (days) (aerobic)

DT₅₀ (typical)

F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
3 = Unverified data of known source

Very persistent

DT₅₀ (lab at 20 °C)

Q2 Q = Miscellaneous data from online sources
2 = Unverified data of unknown source

DT₅₀ (field)

DT₉₀ (lab at 20 °C)

DT₉₀ (field)

DT₅₀ modelling endpoint

General literature states chemical is persistent with DT₅₀ longer than 7 wks. Other sources: 700 days (US3)

Dissipation rate RL₅₀ on plant matrix

Dissipation rate RL₅₀ on and in plant matrix

Aqueous photolysis DT₅₀ (days) at pH 7

AC3 AC = EC Joint Research Centre ESIS European Chemical Substance Information Systems including EINECS, now integrated with the database provided by the European Chemicals Agency (ECHA) (click here )
3 = Unverified data of known source

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

F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
3 = Unverified data of known source

Resistant to hydrolysis DT₅₀ 175-1400 days.

Water-sediment DT₅₀ (days)

Water phase only DT₅₀ (days)

Soil adsorption and mobility

Source; quality score; and other information

F3 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
3 = Unverified data of known source

Notes and range

Other data sources K_oc range 46-51 mL g⁻¹ (USDA)

Notes and range

Source; quality score; and other information

GUS leaching potential index

High leachability

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

4.42 X 10⁰⁰

Potential for particle bound transport index

Potential for loss via drain flow

Bio-concentration factor

BCF (l kg⁻¹)

CT₅₀ (days)

Known metabolites

None

Terrestrial ecotoxicology

Source; quality score; and other information

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

V2 V = ChemID Online Databases; Chemspider; PubChem. (ChemID )
2 = Unverified data of unknown source

Mammals - Short term dietary NOEL

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

Birds - Acute LD₅₀ (mg kg⁻¹)

Birds - Short term dietary (LC₅₀/LD₅₀)

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

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

AC3 AC = EC Joint Research Centre ESIS European Chemical Substance Information Systems including EINECS, now integrated with the database provided by the European Chemicals Agency (ECHA) (click here )
3 = Unverified data of known source

Eisenia foetida

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

Soil micro-organisms

Acute LC₅₀ (mg kg⁻¹)

Chronic NOEC (mg kg⁻¹)

Non-target plants

Honeybees (Apis 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)

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 bee species (1)

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

Mode of exposure

Other bee species (2)

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

Mode of exposure

Beneficial insects (Ladybirds)

Beneficial insects (Lacewings)

Beneficial insects (Parasitic wasps)

Beneficial insects (Predatory mites)

Beneficial insects (Ground beetles)

Aquatic ecotoxicology

Source; quality score; and other information

Fish - Acute 96 hour LC₅₀ (mg l⁻¹)

F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
4 = Verified data

Lepomis macrochirus

Fish - Chronic 21 day NOEC (mg l⁻¹)

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

F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
4 = Verified data

Daphnia magna

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

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

F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
4 = Verified data

Americamysis bahia

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)

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

F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment )
4 = Verified data

Chlamydomonas reinhardtii

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

Mesocosm study data

NOEAEC mg l⁻¹

NOEAEC mg l⁻¹

HUMAN HEALTH AND PROTECTION

Source; quality score; and other information

Threshold of Toxicological Concern (Cramer Class)

High (class III)

Mammals - Acute oral LD₅₀ (mg kg⁻¹)

V2 V = ChemID Online Databases; Chemspider; PubChem. (ChemID )
2 = Unverified data of unknown source

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

V2 V = ChemID Online Databases; Chemspider; PubChem. (ChemID )
2 = Unverified data of unknown source

Mammals - Inhalation LC₅₀ (mg l⁻¹)

AC3 AC = EC Joint Research Centre ESIS European Chemical Substance Information Systems including EINECS, now integrated with the database provided by the European Chemicals Agency (ECHA) (click here )
3 = Unverified data of known source

Other Mammal toxicity endpoints

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

A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications )
5 = Verified data used for regulatory purposes

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

A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications )
5 = Verified data used for regulatory purposes

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

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

A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications )
5 = Verified data used for regulatory purposes

Dermal penetration studies (%)

Dangerous Substances Directive 76/464

Exposure Routes

EU MRL pesticide database

GB MRL Register

Drinking Water Standards

Non-statutory WHO drinking water guideline 0.04 mg l⁻¹

B5 B = UK CRD and ACP Evaluation Documents / and other DEFRA (UK) documents; Also Chemicals Regulation Division, Health and Safety Executive (HSE), UK (click here )
5 = Verified data used for regulatory purposes

UK EA QS database 2018

Drinking Water MAC (μg l⁻¹)

Mammalian dose elimination route and rate

Specific human health issues

Endocrine disruptor

XNo, known not to cause a problem

A0 A = Chromosome aberration (EFSA database)
0 = No data

B0 B = DNA damage/repair (EFSA database)
0 = No data

C0 C = Gene mutation (EFSA database)
0 = No data

D0 D = Genome mutation (EFSA database)
0 = No data

E0 E = Unspecified genotoxicity type (miscellaneous data source)
0 = No data

✓Yes, known to cause a problem

Reproduction / development effects

Acetyl cholinesterase inhibitor

✓Yes, known to cause a problem

XNo, known not to cause a problem

?Possibly, status not identified

Respiratory tract irritant

Skin sensitiser

✓Yes, known to cause a problem

✓Yes, known to cause a problem

✓Yes, known to cause a problem

✓Yes, known to cause a problem

General human health issues

Liver, blood, kidney and lung toxicant
Strong narcotic

Handling issues

Value and interpretation

Flammable, explosive when mixed with air
Corrosive
Toxic and irritating gases may be generated in a fire
IMDG Transport Hazard Class 3

CLP classification 2013

WHO Classification

FM (Fumigant, not classified)

Waste disposal & packaging

Packaging Group II (moderate danger)

Shelf-life, storage, stability and reactivity

1,2-dichloropropane

1,2-dichloropropane

1,2-Dichlorpropan

1,2-dichloropropane

1,2-dicloropropano

dwuchloropropan

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