Melting point :282 °C (dec.)(lit.)
alpha :[α]D20 -1～+1° (c=2.5, H2O)
Boiling point :239.22°C (rough estimate)
Density :1.1426 (rough estimate)
refractive index :1.4587 (estimate)
storage temp. :Sealed in dry,Room Temperature
solubility :Methanol (Slightly), Water (Slightly)
form :Fine Crystalline Powder
pka :2.28, 10.72(at 25℃)
color :White to light beige
Water Solubility :soluble
Merck :14,7458
BRN :81095
InChIKey :HXEACLLIILLPRG-UHFFFAOYSA-N
CAS DataBase Reference :535-75-1(CAS DataBase Reference)
EPA Substance Registry System :2-Piperidinecarboxylic acid (535-75-1)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes 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 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. 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. Continuerinsing.