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Glyph for U+1F739
Source: Noto Sans Symbols

U+1F739 ALCHEMICAL SYMBOL FOR SAL-AMMONIAC

U+1F739 was added to Unicode in version 6.0 (2010). It belongs to the block U+1F700 to U+1F77F Alchemical Symbols in the U+10000 to U+1FFFF Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script. The character is also known as ammonium chloride.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+1F739 behaves as Alphabetic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

Salammoniac, also sal ammoniac or salmiac, is a rare naturally occurring mineral composed of ammonium chloride, NH4Cl. It forms colorless, white, or yellow-brown crystals in the isometric-hexoctahedral class. It has very poor cleavage and is brittle to conchoidal fracture. It is quite soft, with a Mohs hardness of 1.5 to 2, and it has a low specific gravity of 1.5. It is water-soluble. Sal ammoniac is also the archaic name for the chemical compound ammonium chloride.

Pliny, in Book XXXI of his Natural History, refers to a salt produced in the Roman province of Cyrenaica named hammoniacum, so called because of its proximity to the nearby Temple of Jupiter Amun (Greek Ἄμμων Ammon). However, the description Pliny gives of the salt does not conform to the properties of ammonium chloride. According to Herbert Hoover's commentary in his English translation of Georgius Agricola's De re metallica, it is likely to have been common sea salt. In any case, that salt ultimately gave ammonia and ammonium compounds their name.

The first attested reference to sal ammoniac as ammonium chloride is in the Pseudo-Geber work De inventione veritatis, where a preparation of sal ammoniac is given in the chapter De Salis armoniaci præparatione, salis armoniaci being a common name in the Middle Ages for sal ammoniac.

It typically forms as encrustations formed by sublimation around volcanic vents and is found around volcanic fumaroles, guano deposits and burning coal seams. Associated minerals include sodium alum, native sulfur and other fumarole minerals. Notable occurrences include Tajikistan; Mount Vesuvius, Italy; and Parícutin, Michoacan, Mexico.

Representations

System Representation
128825
UTF-8 F0 9F 9C B9
UTF-16 D8 3D DF 39
UTF-32 00 01 F7 39
URL-Quoted %F0%9F%9C%B9
HTML-Escape 🜹
Wrong windows-1252 Mojibake 🜹
alias ammonium chloride

Elsewhere

Complete Record

Property Value
Age 6.0 (2010)
Unicode Name ALCHEMICAL SYMBOL FOR SAL-AMMONIAC
Unicode 1 Name
Block Alchemical Symbols
General Category Other Symbol
Script Common
Bidirectional Category Other Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Lowercase
Simple Lowercase Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Lowercase Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Uppercase
Simple Uppercase Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Uppercase Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Simple Titlecase Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Titlecase Mapping Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Case Folding Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
ASCII Hex Digit
Alphabetic
Bidi Control
Bidi Mirrored
Composition Exclusion
Case Ignorable
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Cased
Full Composition Exclusion
Default Ignorable Code Point
Dash
Deprecated
Diacritic
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji Presentation
Emoji
Extender
Extended Pictographic
FC NFKC Closure Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hyphen
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
Ideographic
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name
Join Control
Logical Order Exception
Math
Noncharacter Code Point
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
NFKC Quick Check Yes
NFKD Quick Check Yes
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Prepended Concatenation Mark
Pattern Syntax
Pattern White Space
Quotation Mark
Regional Indicator
Radical
Sentence Break Other
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Other
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Paired Bracket Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Bidi Paired Bracket Type None
East Asian Width Neutral
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Alphabetic
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+1F739 Alchemical Symbol For Sal-Ammoniac
Script Extension
Vertical Orientation U