Tris hydrochloride solution, pH 8.0

SECTION 2: Hazards identification

CHEMWATCH HAZARD RATINGS Min Max Flammability: 0 Toxicity: 2 Body Contact: 2 Min/Nil=0 Low=1 Reactivity: 0 Moderate=2 High=3 Chronic: 2 Extreme=4 CANADIAN WHMIS SYMBOLS EMERGENCY OVERVIEW RISK Irritating to eyes, respiratory system and skin.

Potential Acute Health Effects

SWALLOWED Accidental ingestion of the material may be damaging to the health of the individual. EYE This material can cause eye irritation and damage in some persons. SKIN This material can cause inflammation of the skin oncontact in some persons. The material may accentuate any pre-existing dermatitis condition. Skin contact with the material may damage the health of the individual; systemic effects may result following absorption. Open cuts, abraded or irritated skin should not be exposed to this material. Entry into the blood-stream, through, for example, cuts, abrasions or lesions, may produce systemic injury with harmful effects. Examine the skin prior to the use of the material and ensure that any external damage is suitably protected. INHALED The material can cause respiratory irritation in some persons. The body's response to such irritation can cause further lung damage. Inhalation of vapors or aerosols (mists, fumes), generated by the material during the course of normal handling, may be damaging to the health of the individual.

Potential chronic health

Long-term exposure to respiratory irritants may result in disease of the airways involving difficult breathing and related systemic problems. Limited evidence suggests that repeated or long-term occupational exposure may produce cumulative health effects involving organs or biochemical systems.