Hydroquinone, 99%

SECTION 2: Hazards identification

EMERGENCY OVERVIEW Appearance: colorless, light tan, or light gray crystals. Warning! Harmful if swallowed. May cause allergic skin reaction. This substance has caused adverse reproductive and fetal effects in animals. May cause cancer based on animal studies. May cause digestive tract irritation with nausea, vomiting, and diarrhea. Light sensitive. Air sensitive. Causes eye and skin irritation. May cause respiratory tract irritation. May cause dermatitis. May cause methemoglobinemia. Target Organs: Central nervous system, respiratory system.

Potential health effects

Eye: May cause eye irritation. Repeated exposure may cause corneal abnormalities including structural changes and brownish discoloration which can lead to decreased visual acuity and blindness. Skin: Causes severe skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May cause dermatitis. Repeated exposure may cause hyperpigmentation of fair skin and depigmentation of dark skin. Ingestion: May cause severe irritation of the digestive tract. May be harmful if swallowed. May cause dizziness, nausea, sense of suffocation, increased respiratory rate, vomiting, pallor, muscle twitching, cyanosis (bluish discoloration of skin due to deficient oxygenation of the blood), delirium, collapse. May cause green or brownish green urine which continues to darken upon standing. Inhalation: May cause respiratory tract irritation. Causes narcotic effects including headache, dizziness, weakness, unconsciousness, and possible death. Vapors may cause dizziness or suffocation. Inhalation of dust may cause respiratory tract irritation. Exposure to high concentration of vapor may caues irritation, photophobia, tearing, and corneal ulceration. Chronic: Prolonged or repeated skin contact may cause sensitization dermatitis and possible destruction and/or ulceration.