Melting point :220-223 °C(lit.)
alpha :-252 º (c=0.5, H2O)
refractive index :-253 ° (C=0.5, 0.1mol/L HCl)
storage temp. :Keep in dark place,Inert atmosphere,Store in freezer, under -20°C
solubility :H₂O: 10 mg/mL as a stock solution. Stock solutions should be filtered sterilized and stored at −20°C. Stable at 37°C for 4 days.
form :powder
color :faint yellow to yellow
PH :pH(10g/l, 25℃) : 1.8～3.0
optical activity :[α]/D -255 to 240° (Specific rotation )
Water Solubility :50 g/L
Sensitive :Air & Light Sensitive
Merck :14,9196
BRN :3844873
Stability :Stable. Incompatible with strong oxidizing agents.
InChIKey :XMEVHPAGJVLHIG-FMZCEJRJSA-N
CAS DataBase Reference :64-75-5(CAS DataBase Reference)
EPA Substance Registry System :Tetracycline hydrochloride (64-75-5)

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 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. 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. P308+P313 IF exposed or concerned: Get medical advice/attention.