Calcium Lime Rust, more commonly known as CLR, is a household cleaning product used for dissolving stains, such as calcium, lime, and iron oxide deposits. It is made by American company Jelmar LLC.

This ingredient is an acid formed from the sugar glucose, which naturally occurs in fruit, honey and wine. It is a chelating agent; a compound that makes metals more soluble in water. As part of the EPA …

Jan 21, 2020 · The Healthy Cleaning ingredient hazard score, from A to F, reflects known and suspected hazards linked to the ingredients. The EWG Verified ® mark means a product meets EWG’s strictest …

Oct 8, 2025 · CLR is a heavy-duty cleaner specifically formulated to clean calcium, lime, and rust from surfaces like sinks, toilet bowls, and bathtubs. These stains are usually the result of minerals in the …

Aug 27, 2023 · What is the main ingredient in CLR? Calcium Limescale & Rust Remover, more commonly known as CLR, is a household cleaning product used for dissolving stains, such as …

Exposure limits have not been established by SWA for any of the significant ingredients in this product. No special equipment is usually needed when occasionally handling small quantities.

Commercially, it is produced by fermentation of simple sugars. In cleaning products it functions as a chelating agent; a compound that makes metals more soluble in water. As part of the EPA Safer …

Oct 25, 2024 · CLR, which stands for Calcium, Lime, and Rust, has a mix of ingredients including phosphoric acid. This mix is designed to tackle more types of mineral deposits, and it's especially …

Weak acids, such as lactic acid, citric acid, and phosphoric acid, are commonly used in cleaning products like CLR to effectively dissolve calcium deposits and rust.

CALL A PHYSCIAN OR POISON CONTROL CENTER IMMEDIATELY. NEVER give an unconscious person anything to ingest.