(1) Physical and chemical properties and uses

Colorless gas, pungent odor. Density: 2.3, boiling point: -10℃. Used in the manufacture of sulfuric acid, sulfite, sulfate and some organic compounds synthesis, bleaching pulp, refining petroleum, etc.

(2) toxicity

Is a moderate poison class. This product is easily absorbed by the wet surface of the mucous membrane to produce sulfurous acid, part of which is then oxidized to sulfuric acid. Therefore, it has a strong stimulating effect on the respiratory tract and eyes.

Maximum permissible concentration: 15mg/m3

(3) the effects of short-term excessive exposure

Inhalation: Inhalation of high concentrations of sulfur dioxide can cause cough, burning pain in the nose and throat, hoarseness and even shortness of breath. Inhalation of very high concentration, can immediately cause reflex glottic spasm and asphyxia.

Eye contact: may cause tearing, photophobia, eye burning pain. Splash of liquid sulfur dioxide into the eye can immediately cause corneal opacity, causing Yi (Yi: a white spot on the cornea that blocks vision).

Skin contact: liquid contamination of the skin, resulting in skin burns, blisters, swelling, necrosis.

The factory exhaust contains sulfur dioxide

(4) the effects of long-term exposure

Long-term inhalation of low concentration of sulfur dioxide, dizziness, headache, weakness, dry cough, nausea, insomnia, loss of smell and taste and other symptoms. Long-term exposure can also cause emphysema, dental erosion and chronic rhinitis.

(5) fire and explosion

This product is non-combustible and non-combustible.