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Examples of “ nitrosol ” products

Examples of “ nitrosol ” products. * BOV PRODUCTS Shave Creams Body Sprays Sun Tan (Sun Block) Sprays Depilatories Insect Repellants Bug Killers Cookware Lubricants Food Flavorings Ultra-pure Water Facial Rinses. * OTHER AEROSOLS single compartment

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Examples of “ nitrosol ” products

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  1. Examples of “nitrosol” products *BOV PRODUCTS Shave Creams Body Sprays Sun Tan (Sun Block) Sprays Depilatories Insect Repellants Bug Killers Cookware Lubricants Food Flavorings Ultra-pure Water Facial Rinses *OTHER AEROSOLS single compartment Air Fresheners and Deodorants Furniture Polishes (Europe) Hard Surface Cleaners (Europe) Contact Lens Flushing Sprays Water Repellant Sprays - Boots Oral Refresher Sprays Selected lubricants

  2. advantages of “nitrosols” * Nitrogen is totally eco-compatible. (78% of air.) * Nitrogen is non-flammable, not a VOC. (No ODP.) * Nitrogen is completely inert – it will not harm any aerosol product. * At typically 0 to 0.6% nitrogen in the formulation, more product is delivered. * It can be filled with either U-t-C or T-t-V gassers, or even in-line or rotary gasser-shakers. (Only U-t-C for BOV productions.) * Pressures increase only slightly when heated. (Charles Law is closely followed.) * Propellant cost is almost negligible. * Sprays are almost silent. (Not frightening to pets or farm animals.)

  3. Disadvantages of “nitrosols” * Loss of propellant by inverting the can. * Requires a mechanical break-up (MBU) actuator. * Produces a fairly coarse spray. * Delivery rate decreases slightly as product is used. * Very slight solubility of gas in products. (If it causes unwanted foam in some.) * Pressure may change (fractionate) some products. * For quality control, gas weight is negligible. (Pressure testing is required.) * Even minor leakage can be harmful, since so little nitrogen is present. (After helium, nitrogen is the smallest molecule.) * Bulk storage is impractical – must use cylinders

  4. Nitrosolpressures

  5. Nitrosolpressureincreasesuponheatingto 55.4ºc (130ºf) in a hotwaterbath

  6. PressuretemperaturecoMPARISIONSNITROGEN VS. AIR-FREE ISO-BUTANE

  7. THE PRESSURE DROP DURING CONSUMER USE of “nitrosols *EXAMPLE: Initial pressure 10.55 kg./cm² (10.34 bars or 150 psi-gauge) at 21.1 °C Determine pressure when 95% is dispensed. *For a fill to 72.5% of the can volume: The final pressure is 2.27 kg./cm² (32.3 psi-g.) *For a fill to 70.0% of the can volume: The final pressure is 2.57 kg./cm² (36.5 psi-g.) *For a fill to 67.5.0% of the can volume: The final pressure is 2.86 kg./cm² (40.7 psi-g.) *For a fill to 65.0% of the can volume: The final pressure is 3.16 kg./cm² (44.9 psi-g.)

  8. THE PRESSURE DROP DURING CONSUMER USE of “nitrosols” *EXAMPLE: Initial pressure 7.03 kg./cm² (6.70 bars or 100 psi-gauge) TASK: Determine the pressure when 95% is dispensed. *For a fill to 72.5% of the can volume: The final pressure is 1.27 kg./cm² (18.0 psi-g.) *For a fill to 65.0% of the can volume: The final pressure is 1.85 kg./cm² (26.8 psi-g.) *For a fill to 60.0% of the can volume: The final pressure is 2.29 kg./cm² (32.0 psi-g.) *For a fill to 55.0% of the can volume: The final pressure is 2.70 kg./cm² (38.4 psi-g.)

  9. FOR BOVs ONLY: THE PRESSURE DROP DURING CONSUMER USE of “nitrosols” *EXAMPLE: Initial pressure 5.27 kg./cm² (5.12 bars or 75 psi-gauge) at 21.1 °C Determine pressure when 95% is dispensed. *For a fill to 70.0% of the can volume: The final pressure is 0.93 kg./cm² (13.2 psi-g.) Considered marginal or too low. *For a fill to 60.0% of the can volume: The final pressure is 1.57 kg./cm² (22.3 psi-g.) Acceptable.

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