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Industry Standards and Best Practices
For the majority of bleach plants in operation today, chlorine dioxide is produced by combining sodium chlorate, methanol, and sulfuric acid. This course discusses the hazards each of these chemicals present as well as the protective measures that should be taken while working with or around them.
Chlorine dioxide boils at 52˚F so at room temperature and atmospheric pressure chlorine dioxide is a gas.
Using chlorine dioxide to bleach pulp releases harmful absorbable organic halides (AOX) into the environment.
The chemicals involved in chlorine dioxide generation are hazardous. Appropriate PPE is a must to prevent injury.
What hazardous chemicals are used to generate chlorine dioxide?Most processes used today use methanol, sodium chlorate, and sulfuric acid, which are all hazardous. Chlorine dioxide is also hazardous.
What are the main hazards of chlorine dioxide?Chlorine dioxide can be a serious threat to respiratory system. Exposure to high concentrations can be fatal.
What are the main hazards of methanol?Methanol is highly flammable but the flame is almost invisible in daylight. It is highly toxic if it gets absorbed through skin, ingested, or inhaled.
What are the main hazards of sodium chlorate?Sodium chlorate is only a mild skin irritant, but small quantities (5-10 g) can be fatal if ingested.
What are the main hazards of sulfuric acid?Sulfuric acid is highly corrosive so it will cause severe chemical burns if it contacts your skin or eyes.
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