Dust entry

o-Tolidine

White to reddish crystals or powder. T [Note: Darkens on exposure to air. Often used in paste or wet cake form. Used as a basis for many dyes.] Chemical & Physical Properties: Personal Protection/Sanitation Respirator Recommendations MW: 212.3 (see Table 2): (see Tables 3 and 4): BP: 572°F Skin: Prevent skin contact NIOSH Sol: 0.1% Eyes: Prevent eye contact

Airborne form

dust

The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.

Health effects

Irrit eyes, nose; in animals: liver, kidney damage; [carc] Skin: Soap flush immedTarget organs: Eyes, resp sys, liver, kidneys [in animals: liver, bladder & Breath: Resp support

Evidence

NIOSH Pocket Guide entry: o-Tolidine. Physical description: White to reddish crystals or powder. T [Note: Darkens on exposure to air. Often used in paste or wet cake form. Used as a basis for many dyes.] Chemical & Physical Properties: Personal Protection/Sanitation Respirator Recommendations MW: 212.3 (see Table 2): (see Tables 3 and 4): BP: 572°F Skin: Prevent skin contact NIOSH Sol: 0.1% Eyes: Prevent eye contact

Source: CDC/NIOSH: NIOSH Pocket Guide to Chemical Hazards ↗

Controls

follow the applicable NIOSH REL and OSHA PEL
use exposure monitoring
use engineering and work-practice controls
use appropriate respiratory protection