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U+1F75F ALCHEMICAL SYMBOL FOR PRECIPITATE

U+1F75F was added to Unicode in version 6.0 (2010). It belongs to the block Alchemical Symbols in the Supplementary Multilingual Plane.

This character is a Other Symbol and is commonly used, that is, in no specific script.

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+1F75F 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:

Precipitation is the creation of a solid in a solution or inside another solid during a chemical reaction or by diffusion in a solid. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'.The chemical that causes the solid to form is called the 'precipitant'. Without sufficient force of gravity (settling) to bring the solid particles together, the precipitate remains in suspension. After sedimentation, especially when using a centrifuge to press it into a compact mass, the precipitate may be referred to as a 'pellet'. The precipitate-free liquid remaining above the solid is called the 'supernate' or 'supernatant'. Powders derived from precipitation have also historically been known as 'flowers'.

Sometimes the formation of a precipitate indicates the occurrence of a chemical reaction. If silver nitrate solution is poured into a solution of sodium chloride, a chemical reaction occurs forming a white precipitate of silver chloride. When potassium iodide solution reacts with lead nitrate solution, a yellow precipitate of lead iodide is formed.

Precipitation may occur if the concentration of a compound exceeds its solubility (such as when mixing solvents or changing their temperature). Precipitation may occur rapidly from a supersaturated solution.

In solids, precipitation occurs if the concentration of one solid is above the solubility limit in the host solid, due to e.g. rapid quenching or ion implantation, and the temperature is high enough that diffusion can lead to segregation into precipitates. Precipitation in solids is routinely used to synthesize nanoclusters.

An important stage of the precipitation process is the onset of nucleation. The creation of a hypothetical solid particle includes the formation of an interface, which requires some energy based on the relative surface energy of the solid and the solution. If this energy is not available, and no suitable nucleation surface is available, supersaturation occurs.

Representations

System Representation
NΒΊ 128863
UTF-8 F0 9F 9D 9F
UTF-16 D8 3D DF 5F
UTF-32 00 01 F7 5F
URL-Quoted %F0%9F%9D%9F
HTML-Escape 🝟
Wrong windows-1252 Mojibake 🝟

Elsewhere

Complete Record

Property Value
Age (age) 6.0
Unicode Name (na) ALCHEMICAL SYMBOL FOR PRECIPITATE
Unicode 1 Name (na1) β€”
Block (blk) Alchemical
General Category (gc) Other Symbol
Script (sc) Common
Bidirectional Category (bc) Other Neutral
Combining Class (ccc) Not Reordered
Decomposition Type (dt) None
Decomposition Mapping (dm) 🝟
Lowercase (Lower) ✘
Simple Lowercase Mapping (slc) 🝟
Lowercase Mapping (lc) 🝟
Uppercase (Upper) ✘
Simple Uppercase Mapping (suc) 🝟
Uppercase Mapping (uc) 🝟
Simple Titlecase Mapping (stc) 🝟
Titlecase Mapping (tc) 🝟
Case Folding (cf) 🝟
ASCII Hex Digit (AHex) ✘
Alphabetic (Alpha) ✘
Bidi Control (Bidi_C) ✘
Bidi Mirrored (Bidi_M) ✘
Bidi Paired Bracket (bpb) 🝟
Bidi Paired Bracket Type (bpt) None
Cased (Cased) ✘
Composition Exclusion (CE) ✘
Case Ignorable (CI) ✘
Full Composition Exclusion (Comp_Ex) ✘
Changes When Casefolded (CWCF) ✘
Changes When Casemapped (CWCM) ✘
Changes When NFKC Casefolded (CWKCF) ✘
Changes When Lowercased (CWL) ✘
Changes When Titlecased (CWT) ✘
Changes When Uppercased (CWU) ✘
Dash (Dash) ✘
Deprecated (Dep) ✘
Default Ignorable Code Point (DI) ✘
Diacritic (Dia) ✘
East Asian Width (ea) Neutral
Extender (Ext) ✘
FC NFKC Closure (FC_NFKC) 🝟
Grapheme Cluster Break (GCB) Any
Grapheme Base (Gr_Base) βœ”
Grapheme Extend (Gr_Ext) ✘
Hex Digit (Hex) ✘
Hangul Syllable Type (hst) Not Applicable
Hyphen (Hyphen) ✘
ID Continue (IDC) ✘
Ideographic (Ideo) ✘
ID Start (IDS) ✘
IDS Binary Operator (IDSB) ✘
IDS Trinary Operator and (IDST) ✘
InMC (InMC) β€”
Indic Positional Category (InPC) NA
Indic Syllabic Category (InSC) Other
ISO 10646 Comment (isc) β€”
Joining Group (jg) No_Joining_Group
Join Control (Join_C) ✘
Jamo Short Name (JSN) β€”
Joining Type (jt) Non Joining
Line Break (lb) Alphabetic
Logical Order Exception (LOE) ✘
Math (Math) ✘
Noncharacter Code Point (NChar) ✘
NFC Quick Check (NFC_QC) Yes
NFD Quick Check (NFD_QC) Yes
NFKC Casefold (NFKC_CF) 🝟
NFKC Quick Check (NFKC_QC) Yes
NFKD Quick Check (NFKD_QC) Yes
Numeric Type (nt) None
Numeric Value (nv) NaN
Other Alphabetic (OAlpha) ✘
Other Default Ignorable Code Point (ODI) ✘
Other Grapheme Extend (OGr_Ext) ✘
Other ID Continue (OIDC) ✘
Other ID Start (OIDS) ✘
Other Lowercase (OLower) ✘
Other Math (OMath) ✘
Other Uppercase (OUpper) ✘
Pattern Syntax (Pat_Syn) ✘
Pattern White Space (Pat_WS) ✘
Quotation Mark (QMark) ✘
Radical (Radical) ✘
Sentence Break (SB) Other
Simple Case Folding (scf) 🝟
Script Extension (scx) Common
Soft Dotted (SD) ✘
STerm (STerm) ✘
Terminal Punctuation (Term) ✘
Unified Ideograph (UIdeo) ✘
Variation Selector (VS) ✘
Word Break (WB) Other
White Space (WSpace) ✘
XID Continue (XIDC) ✘
XID Start (XIDS) ✘
Expands On NFC (XO_NFC) ✘
Expands On NFD (XO_NFD) ✘
Expands On NFKC (XO_NFKC) ✘
Expands On NFKD (XO_NFKD) ✘