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LC5759 Tetramethyl orthosilicate
for synthesis


Order number Packaging Quantity Price €
AC32759 Glass bottle 25 ml 10.89
AC32759 Glass bottle 100 ml 23.63


Product information
Hill Formula C4H12O4Si
HS Code 2920 90 85
EC number 211-656-4
Molar mass 152.22 g/mol
CAS number 681-84-5


Chemical and physical data
Ignition temperature 245 °C
Solubility (20 °C) Hydrolysis
Melting point -2 °C
Molar mass 152.22 g/mol
Density 1.03 g/cm3 (20 °C)
pH value (H2O, 20 °C) not applicable
Boiling point 122 °C (1013 hPa)
Vapor pressure 18 hPa (20 °C)
Explosion limit 0.88 – 23.8 %(V)
Flash point 19 °C


Safety information according to GHS
Hazard Statement(s) H226: Flammable liquid and vapour.
H330: Fatal if inhaled.
H315: Causes skin irritation.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
Precautionary Statement(s) P210: Keep away from heat/sparks/open flames/hot surfaces. – No smoking.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P304 + P340: IF INHALED: Remove vic
Signal Word Danger
Hazard Pictogram(s)

RTECS VV9800000
Storage class 3 Flammable Liquids
WGK WGK 1 slightly water endangering
Disposal 9
Carcinogenic compounds and flammable compounds labelled “Highly toxic” or “Toxic”: container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).


Safety information
R Phrase R 10-26-37/38-41
Flammable.Very toxic by inhalation.Irritating to respiratory system and skin.Risk of serious damage to eyes.
S Phrase S 26-28-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.After contact with skin, wash immediately with plenty of water.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger flammable, very toxic, irritant
Hazard Symbol Very toxic


Transport information
Declaration (transport by sea) IMDG-Code UN 2606 METHYL ORTHOSILICATE, 6.1 (3), I
Declaration (transport by air) IATA-DGR UN 2606 METHYL ORTHOSILICATE, 6.1 (3),


Toxicological data
LD 50 dermal LD50 rabbit 17510 mg/kg


Assay (GC, area%) ≥ 98 %
Density (d 20 °C/ 4 °C) 1.030 – 1.035
Identity (IR) passes test