Aluminium silicate |
Last updated: 09/05/2024
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(Also known as: kaolin; china clay; bolus alba; hydrated aluminium silicate; porcelain clay; pyrophylite; bentone; argilla) |
Aluminium silicate is an insecticide and insect repellent. It has a low mammalian toxicity. Aluminium silicate is virtually insoluble in water and in many organic solvents. Little data has been published regarding its environmental fate. It is moderately toxic to fish and honeybees. |
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 |
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An inorganic salt without pesticidal activity that is used as an insect repellent on top fruit and vines. |
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Aphids; Plant lice; Leaf roller; Pear psylla; Flea beetles; Japanese beetles; Weevils; Sawflies; Thrips |
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Fruit including apples, pears, plums, grapes, cherries, berries; Row field crops |
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- |
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- |
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Current |
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1997, first registered as pesticide USA |
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- |
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Approved |
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31/08/2024 |
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Not applicable |
EC Regulation 1107/2009 (repealing 91/414) |
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Approved |
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Greece/France |
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15/12/2024 |
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No |
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Yes |
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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 |
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  |
✓ |
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  |
  |
  |
  |
  |
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ISIceland |
NONorway |
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None |
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Al₂O₅Si |
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[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Si+4] |
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No data |
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XLIDPNGFCHXNGX-UHFFFAOYSA-N |
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InChI=1S/2Al.5O.Si/q2*+3;5*-2;+4 |
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Yes |
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Insecticide, Semiochemical, Other substance |
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Diluent |
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Inorganic compound |
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999.8 g kg⁻¹ |
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- |
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Natural |
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Biochemically inert - used in pesticide product formulations to form a barrier film preventing target pests from reaching plant. |
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A naturally occurring mineral |
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It is manufactured by reacting aluminium sulphate and sodium silicate followed by precipitation |
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Crop protection |
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Aphids; Plant lice; Leaf roller; Pear psylla; Flea beetles; Japanese beetles; Weevils; Sawflies; Thrips |
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Fruit including apples, pears, plums, grapes, cherries, berries; Row field crops |
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- |
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1302-87-0 |
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934-756-6 |
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841 |
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00104 |
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8488719 |
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No data found |
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162.05 |
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dialuminum;oxygen(2-);silicon(4+) |
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dialuminum;oxygen(2-);silicon(4+) |
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aluminium silicate anhydrous |
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- |
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- |
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Not applicable |
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Not applicable |
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UNM |
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Not applicable |
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- |
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Soft grey-white powder |
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- |
- |
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Usually formulated as a wettable power, mixed with water and applied as a broadcast spray |
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Insoluble |
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Insoluble |
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Insoluble |
Acetone |
- |
Insoluble |
Ethyl acetate |
- |
Insoluble |
n-Heptane |
- |
Insoluble |
Xylene |
- |
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- |
- |
- |
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- |
- |
- |
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Does not sublime or decompose |
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- |
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- |
- |
- |
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- |
- |
- |
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- |
- |
- |
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- |
- |
- |
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- |
- |
- |
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- |
- |
- |
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- |
- |
- |
- |
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Non-volatile |
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- |
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Non-volatile |
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Non-volatile |
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- |
- |
- |
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- |
- |
- |
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Not measureable |
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- |
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- |
- |
- |
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- |
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0.1 |
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
Non-persistent |
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- |
- |
- |
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- |
- |
- |
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0.1 |
Q3 Q = Miscellaneous data from online sources 3 = Unverified data of known source |
Non-persistent |
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- |
- |
- |
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- |
- |
- |
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Natural substance that rapidly disperses in the environment |
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- |
- |
- |
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- |
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- |
- |
- |
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- |
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Stable |
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Stable |
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Stable at all pH's |
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Stable |
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Stable |
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Stable at all pH's |
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- |
- |
- |
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- |
- |
- |
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. |
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- |
Soil adsorption and mobility |
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None
Terrestrial ecotoxicology |
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> 5000 |
Rat |
Low |
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- |
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- |
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- |
- |
- |
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- |
- |
- |
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- |
- |
- |
- |
- |
- |
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> 100 |
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Low |
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> 1000 |
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Low |
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- |
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- |
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- |
- |
- |
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- |
- |
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- |
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- |
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- |
- |
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- |
- |
- |
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- |
- |
- |
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> 100 |
Oncorhynchus mykiss |
Low |
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. 500 |
Unknown species |
Low |
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- |
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HUMAN HEALTH AND PROTECTION |
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High (class III) |
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- |
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> 5000 |
Rat |
Low |
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5000 |
Rat |
- |
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> 2.18 |
Rat 4 hr |
- |
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- |
- |
- |
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None allocated |
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- |
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None allocated |
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None allocated |
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None allocated |
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Carcinogen |
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Endocrine disruptor |
No data found |
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 |
No data found |
Reproduction / development effects |
Acetyl cholinesterase inhibitor |
Neurotoxicant |
?Possibly, status not identified |
No data found |
No data found |
Respiratory tract irritant |
Skin irritant |
Skin sensitiser |
?Possibly, status not identified |
✓Yes, known to cause a problem |
XNo, known not to cause a problem |
Eye irritant |
Phototoxicant |
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✓Yes, known to cause a problem |
No data found |
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May cause gastrointestinal effects Antidiarrhoeal agent |
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Not explosive or oxidising Not expected to auto-ignite; Not highly flammable |
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Health: H315, H318, H319, H335 |
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Not listed (Not listed) |
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aluminium silicate |
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acide silicique sel d'aluminium |
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Kieselsaure, aluminiumsalz |
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- |
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acido silicico sal de aluminio |
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Record last updated: |
09/05/2024 |
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 |