Empirical Formula: C₆H₆O₂
Molecular Weight: 110.1106 
Index of Refraction: 1.612
Molar Refractivity: 30.01 cm³
Molar Volume: 86.2 cm³
Surface Tension: 57.1 dyne/cm
Density: 1.275 g/cm³
Flash Point: 131.9 °C
Boiling Point: 280 °C at 760 mmHg
Vapour Pressure: 0.00229 mmHg at 25 °C
Melting point: 109-112 °C(lit.)
Storage tempreture: 0-6 °C
Water solubility: 140 g/100 mL
Sensitive: Light sensitive
Appearance: Crystals or powder
Structure of Resorcinol (CAS NO.108-46-3):
                      
IUPAC Name: Benzene-1,3-diol
Canonical SMILES: C1=CC(=CC(=C1)O)O
InChI: InChI=1S/C6H6O2/c7-5-2-1-3-6(8)4-5/h1-4,7-8H
InChIKey: GHMLBKRAJCXXBS-UHFFFAOYSA-N
Product Category of Resorcinol (CAS NO.108-46-3): Color Former & Related Compounds;Developer;Functional Materials

 Resorcinol (CAS NO.108-46-3) is used as an antiseptic and disinfectant, and is used 5 to 10% in ointments in the treatment of chronic skin diseases and eczema of a sub-acute character. One emerging use is as a template molecule in supramolecular chemistry. It is used as an analytical reagent for the qualitative determinaion of ketoses, and is the starting material for resorcinarene molecules and the initiating explosive lead styphnate. Resorcinol is also used as a chemical intermediate for the synthesis of pharmaceuticals and other organic compounds. It is used in the production of diazo dyes and plasticizers and as a UV absorber in resins.

 3-Ethylphenol (CAS NO.620-17-7) is obtained on fusing many resins with potassium hydroxide, or by the distillation of Brazilwood extract. It also may be prepared synthetically by fusing 3-iodophenol, phenol-3-sulfonic acid or benzene-1,3-disulfonic acid with potassium carbonate; by the action of nitrous acid on 3-aminophenol; or by the action of 10% hydrochloric acid on 1,3-diaminobenzene. Many ortho- and para-compounds of the aromatic series also yield resorcinol on fusion with potassium hydroxide.

Hazard Codes: Xn,  N
Risk Statements:
22:  Harmful if swallowed 
50:  Very Toxic to aquatic organisms    
36/38:  Irritating to eyes and skin 
Safety Statements:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
61:  Avoid release to the environment. Refer to special instructions safety data sheet 

  Resorcinol , its cas register number is 108-46-3. It also can be called 1,3-Dihydroxybenzene ; 1,3-Benzenediol ; and 3-Hydroxycyclohexadien-1-one . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product: Wash mouth out with water, and get medical aid immediately. Notes to physician: Treat supportively and symptomatically.
In addition, Resorcinol (CAS NO.108-46-3) absorbs moisture or water from the air. It may discolor on exposure to air and light. It is not compatible with strong oxidizing agents, bases, acid chlorides, iron, ferric salts, acid anhydrides, alkalies, albumin, iron salts, antipyrine, methanol, acetanilide, camphor, urethane, spirit nitrous ether, and you must not take it with incompatible materials, light, dust generation, exposure to air, exposure to moist air or water, heat. And also prevent it to broken down into hazardous decomposition products: Carbon monoxide, carbon dioxide.