Melting point :26-28 °C (lit.)
Boiling point :242-243 °C (lit.)
Density :1.099 g/mL at 25 °C (lit.)
vapor pressure :5Pa at 20℃
FEMA :2978 | ISOQUINOLINE
refractive index :n20/D 1.623(lit.)
Flash point :225 °F
storage temp. :2-8°C
solubility :5g/l
form :Low Melting Solid
pka :5.42(at 20℃)
color :Light brown
PH :7.5 (5g/l, H2O, 20℃)
Odor :at 0.10 % in triacetin. sweet balsam herbal benzaldehyde anise
Odor Type :balsamic
Water Solubility :practically insoluble
Merck :14,5222
JECFA Number :1303
BRN :107549
Dielectric constant :10.7（20℃）
InChIKey :AWJUIBRHMBBTKR-UHFFFAOYSA-N
LogP :2.08
Dissociation constant :5.19 at 25℃
CAS DataBase Reference :119-65-3(CAS DataBase Reference)
NIST Chemistry Reference :Isoquinoline(119-65-3)
EPA Substance Registry System :Isoquinoline (119-65-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.