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NSF Standards for Food-Grade Lubricants Standard Description Use Case H1: Incidental food contact (<10 ppm). Equipment near food that may accidentally touch it. H2: Products approved for food-adjacent use. No food contact allowed. Machinery parts that do not touch food. H3: Soluble oils for rust prevention. Hooks and trolleys in food processing ...
Oxindole (2-indolone) is an aromatic heterocyclic organic compound with the formula C 6 H 4 CH 2 C(O)NH. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing ring. Oxindole is a modified indoline with a substituted carbonyl at the second position of the 5-member indoline ring ...
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
It is commonly known in a dilute aqueous solution as bleach or chlorine bleach. [4] It is the sodium salt of hypochlorous acid , consisting of sodium cations ( Na + ) and hypochlorite anions ( − OCl , also written as OCl − and ClO − ).
According to 2013 Home Hygiene and Health report, [16] using bleach, whether chlorine- or peroxide-based, significantly increases germicidal efficiency of laundry even at low temperatures (30-40 degrees Celsius), which makes it possible to eliminate viruses, bacteria, and fungi from a variety of clothing in a home setting.
For example, the melting point of silicon at ambient pressure (0.1 MPa) is 1415 °C, but at pressures in excess of 10 GPa it decreases to 1000 °C. [13] Melting points are often used to characterize organic and inorganic compounds and to ascertain their purity. The melting point of a pure substance is always higher and has a smaller range than ...
It is a less aggressive bleach than sodium hypochlorite and other chlorine-based bleaches, causing less degradation to dyes and textiles. Sodium perborate releases oxygen rapidly at temperatures greater than 60 °C. Addition of the activator, typically tetraacetylethylenediamine (TAED), makes it active at lower temperatures (40–60 °C).
This chlorine-releasing compound is the most common bleaching and disinfection compound. A dilute (3–6%) aqueous solution in water, historically known as Eau de Labarraque or "Labarraque's water", [17] is widely marketed as a household cleaning product, under the name "liquid bleach" or simply "bleach".