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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.
CLR's ingredients may include various compounds: [1] [2]
One formulation is (by weight) lactic acid 12–18%, gluconic acid 2.50–3.75%, lauramine oxide 1.50–3.25%, with the remainder being water. [3] The product also contained phosphoric acid at one time,[ citation needed] but it is now phosphate-free.
Weak acids can dissolve calcium deposits and rust without damaging the surrounding metals and plastics.[ citation needed]
CLR is made by Jelmar LLC, an American company located in Skokie, Illinois. The company was founded in 1967 by Manny Gutterman. As of 2019 [update], the company was still owned and operated by Gutterman's family. [4]
This product contains the following toxic chemicals subject to the reporting requirements of Section 313 of the Emergency Planning and Community Right To Know Act of 1986, as amended, and of 40 CFR 372 (for SARA 313)
SECTION 3 - COMPOSITION /INFORMATION ON INGREDIENTS