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LC5307 Pyrocatechol monoethyl ether
(Tiron) metal indicator


Order number Packaging Quantity Price €
AC32307 Glass bottle 250 ml 18.68


Product information
Synonyms Guaethol, 2-Ethoxyphenol
Hill Formula C8H10O2
Chemical formula 2-(C2H5O)C6H4OH
HS Code 2909 50 00
EC number 202-358-5
Molar mass 138.16 g/mol
CAS number 94-71-3


Chemical and physical data
Solubility 9 g/l (30 °C)
Melting point 24 – 27 °C
Molar mass 138.16 g/mol
Density 1.10 g/cm3 (20 °C)
Boiling point 214 – 216 °C (1013 hPa)
Vapor pressure 1 hPa (45 °C)
Flash point 86 °C
Refractive index 1.5291 (25 °C, 589 nm)


Safety information according to GHS
Hazard Statement(s) H319: Causes serious eye irritation.
H315: Causes skin irritation.
Precautionary Statement(s) 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.
Signal Word Warning
Hazard Pictogram(s)
Storage class 10 – 13 Other liquids and solids
WGK WGK 2 water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Safety information
R Phrase R 36/38
Irritating to eyes and skin.
S Phrase S 26
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
Categories of danger irritant
Hazard Symbol



Toxicological data
LD 50 oral LD50 rat > 2000 mg/kg


Assay (GC, area%) ≥ 98 %
Melting range
– lower value
≥ 24 °C
– upper value ≤ 27 °C
Identity (IR) passes test