U+21CC "⇌" Rightwards Harpoon over Leftwards Harpoon Unicode Character

Unicode Version 17.0

U+21CC "⇌" Rightwards Harpoon over Leftwards Harpoon is a mathematical and scientific symbol commonly used to represent a reversible chemical reaction, indicating that the process can proceed in both forward and backward directions under the same conditions. Unlike the equilibrium sign (⇋), this character specifically places the rightward harpoon above the leftward one, and it is frequently employed in contexts of organic chemistry or physics to denote dynamic equilibria or bidirectional processes such as electron flow or resonance structures. Its typographic design combines two opposing harpoon arrows, with the top arrow pointing right and the bottom arrow pointing left, visually capturing the idea of simultaneous or competing directional movement.

General Properties

Code Point U+21CC
Version Added 1.1
Name Rightwards Harpoon over Leftwards Harpoon
Unicode 1.0 Name Right Harpoon over Left Harpoon
Block Arrows
General Category Other Symbol
Canonical Combining Class Not Reordered
Bidirectional Class Other Neutral

Encodings

HTML Decimal Encoding ⇌
HTML Hex Encoding ⇌
UTF-8 Encoding 0xE2 0x87 0x8C
UTF-16 Encoding 0x21CC
UTF-32 Encoding 0x000021CC
C/C++/Java Escape \u21cc

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
NFKC Quick Check Yes
NFKD Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Alphabetic
Script Common
Script Extensions Common
Indic Syllabic Category Other
Pattern Syntax Yes
Math Yes
Other Math Yes
Vertical Orientation Rotated
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Other
Sentence Break Other