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A 50% reduction of IPA concentration of 10 t0 15 % (vol.) in dampening water still in common use today to 6 to 8 % (vol.) makes an important contribution to the reduction of IPA emissions into the air. The impact on emissions achieved by further reduction of the alcohol concentration to < 5% is significantly lower.
Emulsifying graphs by Surland
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unlimited water pick-up leads to increase of dot gain, toning and unequally printed areas |
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very fast ink-water balance, therefore sharp dot and fast start-up of plates |
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poor water pick-up leads to bad ink transfer, decrease of ink density, to sharp dot gain and partly blinding of the plate |
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| Isopropyl Alcohol |
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Used in sheetfed / web fed printing industry:
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Used as a dampening additive in alcohol dampening unit and reduces surface tension |
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It increases fountain solution transport to inking plate and inking unit. |
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Increases viscocity of fountain solution. |
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Faster wetting of plate . |
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Less ink build up on dampening rollers. |
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Cooling effect in the press / chiller unit because of evaporation. |
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Application |
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| Used as Thinner, Disinfactant, DE-ICING etc. |
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Standard dosage for Priniting Industry 5 -15 % and for other Industry as per the requirement |
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Flash point 12 ºC |
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Ignition temp 425 ºC |
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Density 0,785 gm / cm³ |
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Solubility in water - Missible in all proportion |
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Features |
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| Safety Measures: |
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Use appropriate container to avoid environmental contamination |
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Do not discharge into drains or water and donot store on public depositories |
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If swollowed induce vomiting , seek medical advice |
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Repeat and prolonged skin contact may cause removal of natural fat from skin and irritatiion of the skin |
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Note |
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