Irwin Strait-Line Blue Standard Marking Chalk - Blue

The Irwini Strait-Line chalk range has a wide range of permanencies and colors. Whether working indoors or out, on finished surfaces or in extreme conditions, Irwini Strait-Line has the ideal chalk for every job. Dust-off chalk is temporary chalk that can be used to mark interior walls and trim and then be wiped away cleanly. Permanent staining chalk is great for extreme outdoor conditions because it can withstand harsh weather conditions and months of jobsite wear.

Features

• Flip-Top Cap - Keeps chalk in the bottle and seals chalk in an airtight chamber, keeping out moisture and reducing the risk of clumping
• Marks are temporary
• Provides great visibility

Applications - Indoor/Outdoor

• Roofing
• Paneling
• Interior layout
• Siding

Specifications

• Color: Blue
• Compositions: Calcium carbonate, ultramarine blue, silica
• Form: Powder
• Odor/Scent: Odorless
• Relative density: 2.7 to 2.71
• Specific gravity: 2.7 to 2.71
• pH range: 8.5 to 9.5
• Type: Standard
• Weatherability: 1 week
• Permanence: 1

Safety Data Sheet.pdf