# NIOSH Pocket Guide to Chemical Hazards
Resorcinol | CAS 108-46-3
C6H4(OH)2 | RTECS VG9625000
Synonyms & Trade Names 1,3-Benzenediol; m-Benzenediol; 1,3-Dihydroxybenzene; m-Dihydroxybenzene; 3-Hydroxyphenol; m-Hydroxyphenol | DOT ID & Guide 2876 153
Exposure Limits | NIOSH REL: TWA 10 ppm (45 mg/m3) ST 20 ppm (90 mg/m3)
OSHA PEL†: none
IDLH N.D. | Conversion 1 ppm = 4.50 mg/m3
Physical Description White needles, plates, crystals, flakes, or powder with a faint odor. [Note: Turns pink on exposure to air or light, or contact with iron.]
MW: 110.1 | BP: 531°F | MLT: 228°F | Sol: 110%
VP(77°F): 0.0002 mmHg | IP: 8.63 eV |  | Sp.Gr: 1.27
Fl.P: 261°F | UEL: ? | LEL(392°F): 1.4% |
Class IIIB Combustible Liquid, but may be difficult to ignite.
Incompatibilities & Reactivities Acetanilide, albumin, alkalis, antipyrine, camphor, ferric salts, menthol, spirit nitrous ether, strong oxidizers & bases [Note: Hygroscopic (i.e., absorbs moisture from the air).]
Measurement Methods NIOSH 5701; OSHA PV2053
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash | First Aid (See procedures) Eye: Irrigate immediately Skin: Water wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations To be added later
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, nose, throat, upper respiratory system; methemoglobinemia; cyanosis, convulsions; restlessness, bluish skin, increased heart rate, dyspnea (breathing difficulty); dizziness, drowsiness, hypothermia, hematuria (blood in the urine); spleen, kidney, liver changes; dermatitis
Target Organs Eyes, skin, respiratory system, cardiovascular system, central nervous system, blood, spleen, liver, kidneys
See also: INTRODUCTION