Description
Irwin Strait Line 4 oz. Red Powder Chalk is a high-quality chalk that is perfect for marking lines on a variety of surfaces. It is made from calcium carbonate and red iron oxide, and has a specific gravity of 3.3 to 3.35, a relative density of 3.4 to 3.45, and a pH range of 8.5 to 9.5. It is odorless and comes in a plastic bottle. IRWIN STRAIT-LINE Marking chalks have a newly engineered flip-top cap that keeps the chalk in the bottle where you want it and stops it from spilling out in areas that you don’t. The flip-top cap, available on all IRWIN STRAIT-LINE chalk bottles, seals the chalk in an air-tight chamber, keeping out moisture and reducing the risk of clumping.
4 oz. bottle
Red powder chalk
Made from calcium carbonate and red iron oxide
Specific gravity of 3.3 to 3.35
Relative density of 3.4 to 3.45
pH range of 8.5 to 9.5
Odorless
Comes in a plastic bottle
WARNING: Cancer and Reproductive Harm –
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