U+1F745 Alchemical Symbol for Alum
U+1F745 was added in Unicode version 6.0 in 2010. It belongs to the block
This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+1F745 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
An alum () is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula XAl(SO
4)
2Β·12β―H
2O, such that X is a monovalent cation such as potassium or ammonium. By itself, "alum" often refers to potassium alum, with the formula KAl(SO
4)
2Β·12β―H
2O. Other alums are named after the monovalent ion, such as sodium alum and ammonium alum.The name "alum" is also used, more generally, for salts with the same formula and structure, except that aluminium is replaced by another trivalent metal ion like chromiumIII, and/or sulfur is replaced by another chalcogen like selenium. The most common of these analogs is chrome alum KCr(SO
4)
2Β·12β―H
2O.In most industries, the name "alum" (or "papermaker's alum") is used to refer to aluminium sulfate, Al
2β―(SO
4)
3Β·nβ―H
2O, which is used for most industrial flocculation:β766β (the variable n is an integer whose size depends on the amount of water absorbed into the alum). For medicine, the word "alum" may also refer to aluminium hydroxide gel used as a vaccine adjuvant.
Representations
System | Representation |
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NΒΊ | 128837 |
UTF-8 | F0 9F 9D 85 |
UTF-16 | D8 3D DF 45 |
UTF-32 | 00 01 F7 45 |
URL-Quoted | %F0%9F%9D%85 |
HTML hex reference | 🝅 |
Wrong windows-1252 Mojibake | Γ°ΕΈΒβ¦ |
Elsewhere
Complete Record
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6.0 (2010) | |
ALCHEMICAL SYMBOL FOR ALUM | |
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