Product Overview
1,2,3,4-Tetrahydroisoquinoline is a nitrogen-containing heterocyclic organic compound with the molecular formula C9H11N and molecular weight of 133.19 g/mol. It is typically a clear yellow to brown liquid with an amine-like odor. It is used as a building block in organic synthesis and chemical research.
Organic synthesis and chemical research.
Preparation of nitrogen-containing heterocyclic compounds.
Development of pharmaceutical research intermediates.
Laboratory reagent for synthetic chemistry.

1,2,3,4-TETRAHYDROISOQUINOLINE Chemical Properties
Melting point | −30 °C(lit.) |
Boiling point | 232-233 °C(lit.) |
density | 1.064 g/mL at 25 °C(lit.) |
vapor pressure | 3.33-97.9Pa at 20-58.5℃ |
refractive index | n20/D 1.568(lit.) |
Fp | 210 °F |
storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
solubility | 20g/l |
form | Liquid |
pka | 9.66±0.20(Predicted) |
color | Clear yellow to brown |
Water Solubility | Soluble in water at 20°C 20g/L. |
BRN | 116156 |
InChIKey | UWYZHKAOTLEWKK-UHFFFAOYSA-N |
CAS DataBase Reference | 91-21-4(CAS DataBase Reference) |
EPA Substance Registry System | Isoquinoline, 1,2,3,4-tetrahydro- (91-21-4) |
Safety Information
Hazard Codes | Xi |
Risk Statements | 36/37/38 |
Safety Statements | 26-36 |
WGK Germany | 3 |
RTECS | NX4900000 |
Hazard Note | Irritant |
TSCA | Yes |
HS Code | 29334900 |
Safety and Storage
Store in a tightly sealed container in a cool, dry, well-ventilated area. Keep away from heat and oxidizing agents. Handle with suitable protective equipment and follow the supplier-specific Safety Data Sheet (SDS), as the substance may cause serious skin burns and eye damage.