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Basic Chemistry Training

Basic Chemistry Training. 0-------------------------7------------------------14. THE pH SCALE. ACID. NEUTRAL. ALKALINE. 5--------------9. Acceptable Disposal Range. The pH scale ranges from 0-14 * pH of 7 is Neutral * pH less than 7 is Acidic * pH more than 7 is Alkaline.

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Basic Chemistry Training

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  1. BasicChemistry Training

  2. 0-------------------------7------------------------14 THE pH SCALE ACID NEUTRAL ALKALINE 5--------------9 Acceptable Disposal Range The pH scale ranges from 0-14 * pH of 7 is Neutral * pH less than 7 is Acidic * pH more than 7 is Alkaline

  3. COMMON pH EXAMPLES: Strong Acid Neutral Mild Alkaline Strong Alkaline Mild Acid Stomach acid Water Ammonia Drain opener Coffee Soft drinks Baking soda Bleach Contact lenses solution Drain opener Vinegar

  4. ALKALINE NEUTRAL ACIDIC SOLVENT PRODUCT CLASSIFICATIONS Water-Based No Water

  5. ALKALINE & CAUSTIC • Alkaline solutions • pH greater than 9 • used as general cleaners and degreasers. • Caustic solutions • pH of 13 or 14 • contain Potassium Hydroxide or Sodium Hydroxide. • release energy quickly - are very aggressive on soils, surfaces, soft metals & human skin (IMMEDIATE HARM) • Caustics are always alkaline, alkalies are not always caustic.

  6. ACIDS • Acid • pH less than 5 • used to brighten metals, remove scale & rust, etch concrete • acid types vary in aggressiveness. • the primary acids used in Zep products are: • Phosphoric, Muriatic, Sulfuric, and Hydrofluoric • Hydrofluoric Acid • very toxic and can be fatal if used incorrectly. • Restricted for sale to approved customers only.

  7. SOLVENTS • Solvents • do not contain water, so therefore a pH can not be measured • some solvents evaporate quickly, some slowly. In general, fast evaporation means flammable (chlorinated solvents are an exception) • they vary in “strength” (the ability to remove soils or tendency to attack surfaces) • used for degreasing and removal of coatings • BE CAREFUL - solvents can damage plastic, rubber, painted surfaces, and more

  8. NATURAL SOLVENTS • Solvents derived from natural, organic sources; considered biodegradable • Excellent degreasers, free rinsing • When water is added, the product emulsifies (becomes milky) • Can damage rubber, plastic, vinyl, and paint with extended contact • Citrus Solvents • Solvents derived from citrus (usually d-limonene) • Pine Solvents • Solvents derived from pine oil (usually pine terpene) • Soy Solvents • solvents derived from soy (usually soy methyl ester)

  9. BUTYL CLEANERS • Butyl (2-Butoxyethanol) • is a water-based solvent commonly used in alkaline cleaning products • generally, the higher the butyl content, the better the product will remove grease; and the higher the alkalinity content, the better the product will be for dirt and general soils. • Very effective cleaner but poses environmental and health concerns for users.

  10. There are Four Major Factors That Determine Which Product To Use For A Cleaning Application: Soil To Be Removed Surface From Which Soil Is To Be Removed Cleaning Method Which Can Be Used Are there any Other restrictions or variables to be aware of (e.g. specific chemicals not allowed) which will affect the choice of chemical. APPLYING BASIC CHEMISTRY

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