Melting point :175-177 °C(lit.)
alpha :D25 -257.9° (0.1N HCl); D25 -239° (methanol)
Boiling point :554.44°C (rough estimate)
Density :1.3809 (rough estimate)
refractive index :1.6500 (estimate)
storage temp. :2-8°C
solubility :95% ethanol: soluble12.5mg/mL
form :powder
pka :pKa (50% aq DMF): 8.3, 10.2(at 25℃)
color :yellow to yellow orange
optical activity :[α]25/D -239° in methanol (Specific rotation ) &_& [α]25/D -257.9°, c = 0.1 M HCl mol (Specific rotation )
Water Solubility :Limited solubility in water. Soluble in 1M HCl with heating.
Merck :13,9271
BRN :2230417
BCS Class :3
Stability :Hygroscopic
InChIKey :OFVLGDICTFRJMM-WESIUVDSSA-N
CAS DataBase Reference :60-54-8(CAS DataBase Reference)
NIST Chemistry Reference :Tetracycline(60-54-8)
EPA Substance Registry System :Tetracycline (60-54-8)

Symbol(GHS):
Signal word:	Warning
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 H411 Toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 2
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P273 Avoid release to the environment. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P308+P313 IF exposed or concerned: Get medical advice/attention.