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Composition and Applicationsof Water Indicating Paste
A visual indicating paste composition for producing a detectable color change upon contact with an aqueous solution comprising an indicator dye capable of changing color in the pH range between about 7 and about 11, an inorganic base in the form of a caustic powder dispersed in a liquid carrier capable of absorbing water which is not rapidly leached by water or hydrocarbon, and a minor amount of a boron-containing compound, is provided. When applied to a measuring probe, the paste composition is particularly adapted for detecting the water level in the bottom of tanks and delivery systems containing gasoline, and especially gasoline containing oxygenated blending components, by producing a clear detectable color change without bleeding or run-off upon contact with an aqueous solution. The paste composition exhibits long shelf life and improved water tolerance.
A method for detecting water present an ingredient, which in an admixture of an aqueous solution and a separate hydrocarbon liquid phase comprising:
Providing a water finding probe coated on at least one end thereof with a visual indicating paste composition comprising a water soluble indicator dye capable of changing color in the pH range between about 7 and 11, an inorganic base in the form of a caustic powder dispersed in a liquid carrier capable of absorbing water but which is not rapidly leached by water or hydrocarbon, a gelling agent, and a boron-containing compound which is miscible with or soluble in said carrier and capable of being hydrolyzed upon contact with water to yield boric acid or a salt thereof, present in a moisture inhibiting amount.
Inserting the coated end of said probe into said admixture.
Removing said probe from said admixture, and observing thereon, a clear detectable color change, without bleeding or run-off, upon contact with the aqueous solution contained in said admixture
Description for Water Indicating Paste Applications:
- Simply spread a thin film of the paste on the tape or brass bob where the water level is expected to appear.
- Lower tape or rod into tank until bottom is recheached.
- The paste turns to positive contrast of brilliant colors contact with water.
- Water Finding Paste turns red upon contact with water. Creates a sharp mark and is an effective top level indicator of waterin gasoline, kerosene, and gas oils; A few seconds longer required for heavy and dark oils.
- Easy to apply, no need to mix. Fast, easy cleanup .
For example, a most effective top level indicator, this light pink water indicating paste turns to a contrast of red upon contact with petrol or gasoline, naphthalene, kerosene, gas oil, crude oil, jet fuels, and various chemicals.This unique paste can be used with a measuring gauge, rod or calibrated line to determine water or fuel level. Apply the paste in the area that the level is expected to appear. When the paste comes in contact with water it will immediately change from golden brown to bright red, marking the level. Any inquiry,pls feel free to contact with us. More Products from this Supplier oil dipping tapes/gauging tape/Measuring Tape/oil dip rod.
A simple introduction of composition and applicationsof water indicating paste.
Keywords
Water Indicating Paste, Water Finding Paste , Water Finder Paste
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