Melting point :183°C (dec.)
Boiling point :761.02°C (rough estimate)
Density :1.1782 (rough estimate)
refractive index :1.6000 (estimate)
storage temp. :2-8°C
solubility :chloroform: soluble50mg/mL, clear
pka :1.7, 7.9(at 25℃)
form :crystalline
color :faint red to very dark red
Water Solubility :Soluble in DMSO or methanolSoluble in water, ethyl acetate, chloroform, methanol, tetrahydrofuran and dimethyl sulfoxide.
Merck :14,8216
BRN :5723476
BCS Class :2
Stability :Hygroscopic, Light Sensitive
IARC :3 (Vol. 24, Sup 7) 1987
EPA Substance Registry System :Rifampin (13292-46-1)

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 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 H362 May cause harm to breast-fed children Reproductive toxicity, effects on or via lactation Additional category P201, P260, P263, P264, P270,P308+P313
Precautionary statements:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P263 Avoid contact during pregnancy/while nursing. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. 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.