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GET ADDITIONAL DATA HERE!

kieselgur
** diatomaceous earth ** amorphous silicon dioxide ** silica ** diatomite ** kieselguhr ** siliceous earth ** amorphous silica ** DE ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home
Further data may be found in the VSDB and BPDB

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

Description: Naturally occurring soft sedimentary rock with various application in agriculture including a general insecticide, anti-caking agent and livestock anthelmintic.

Example pests controlled: Insect pests and mites in storage

Example applications: -

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1836, first discovered

EC Regulation 1107/2009 (repealing 91/414):
Status Approved
Dossier rapporteur/co-rapporteur Austria/Greece
Date inclusion expires 31/08/2020
EU Candidate for substitution (CfS) No
Listed in EU database Yes

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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism None
Chemical formula (SiO2)n
Canonical SMILES O=[Si]=O
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) VYPSYNLAJGMNEJ-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/O2Si/c1-3-2
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 Insecticide, Acaracide, Other substance
Other constituent type Anticaking agent, Livestock nutritional additive as a anthelmintic
Substance group Unclassified
Minimum active substance purity >1000 g/kg
Known relevant impurities EU dossier - none declared
Substance origin Natural
Mode of action Acts as an insecticide via its ability to absorb liquid from insect shells and bodies causing them to dehydrate. It also acts as a micro-abraisive.
CAS RN 61790-53-2
EC number -
CIPAC number 647
US EPA chemical code -
PubChem CID -
Molecular mass (g mol-1) -
Chemical name kieselgur
Other status information Registered as a food additive and does not need registration for use as a pesticide in the UK
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 Fine powdery solid
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
  • Interfarm
  • BioFA, Germany
Example products using this active
  • SilisoSec Demeter
  • Sprigone Eco
UK LERAP status Not applicable
Formulation and application details -


ENVIRONMENTAL FATE

for kieselgur

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) 120 Q3 Moderate
Solubility - In organic solvents at 20oC (mg l-1) - - -
Melting point (oC) 1610 Q4 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P - - -
Log P - - -
Bulk density (g ml-1)/Specific gravity - - -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) - - -
Henry's law constant at 25oC (Pa m3 mol-1) - - -
GUS leaching potential index Click here for a note on the limitations of the GUS index - - -
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 - - -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - - -
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

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) 730 A5 Very persistent
DT50 (lab at 20oC) 730 A5 Very persistent
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Literature states that the substance is stable in soil
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 -
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 - - -
Koc -
Notes and range -
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for kieselgur

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) - - -
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 2500 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2000 Q2 Expert judgement Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 100 A4 Oncorhynchus mykiss Low
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 100 A4 Daphnia magna Low
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 - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) > 100 A4 Desmodesmus subspicatus Low
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) - - -
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) > 100 Q2 Expert judgement Low
Earthworms - Acute 14 day LC50 (mg kg-1) > 1000 Q2 Expert judgement Low
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 - - -
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for kieselgur

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 - - -
Mammals - Acute oral LD50 (mg kg-1) > 2500 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 3160 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 25 A5 Rat (whole body), 1 hr -
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) 0.03 A4 Rat, SF=25 as AAOEC -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) None allocated A5 -
Dermal penetration studies (%) negligible A5 -
Dangerous Substances Directive 76/464 - - -
Exposure Limits [UK LT TWA 8 hr: 1.2 mg/m3] UK EA QS database, 2018 -
Exposure Routes Public Risk considered to be negligible
Occupational PPE recommended
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

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

-

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

-

-

General human health issues Possible lungs toxicant
May cause pneumoconiosis, bronchitis and emphysema

: 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 Not explosive or oxidising
CLP classification 2013 None allocated
EC Risk Classification Click here to view information omn the EU risk phrases Carcinogen category 2: R45
Xn - Harmful: R43
Xi - Irritant: R36/38
EC Safety Classification Click here to view information omn the EU safety phrases S53, S22, S26, S45
WHO Classification NL - Not listed
US EPA Classification (formulation) - -
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for kieselgur

Language Name
English kieselgur
French -
German Kieselgur
Danish -
Italian -
Spanish -
Greek -
Slovenian -
Polish -
Swedish -
Hungarian -
Dutch -

Record last updated: Wednesday 03 April 2019
Contact: aeru@herts.ac.uk