Perinone
A group of organic pigments with orange and red isomers
No single value: Perinone is a material, and its colour varies. The background shows its family, orange.
Perinone is a family of organic compounds used as pigments, with two main forms: an orange (trans) and a red (cis) isomer. Both are made from naphthalenetetracarboxylic dianhydride and o-phenylenediamine, and are valued for their colour and use as organic semiconductors.
- Perinone has two main isomers: orange and red pigments
- Made from naphthalenetetracarboxylic dianhydride and o-phenylenediamine
- Used as pigments and organic semiconductors
- The orange isomer is Pigment Orange 43
- The red isomer is Pigment Red 194
What colour is Perinone?
Perinone refers to a group of synthetic organic compounds that serve as pigments. The main forms are two isomers: one gives an orange pigment, the other a red. These pigments are valued for their strong, clear colours and are used in various applications, especially where stable, bright orange or red hues are needed. Perinone pigments are also notable for their role as organic semiconductors.
Where does Perinone come from?
The name 'perinone' comes from its chemical structure, but the sources do not give a specific origin for the name. The compound is made by reacting naphthalenetetracarboxylic dianhydride with o-phenylenediamine, resulting in two isomers with different colours. The orange isomer is known as Pigment Orange 43, and the red as Pigment Red 194.
How is Perinone made?
Perinone pigments are synthesised by condensing naphthalenetetracarboxylic dianhydride with o-phenylenediamine. This reaction produces two isomers: the trans isomer (Pigment Orange 43) and the cis isomer (Pigment Red 194). Both are entirely synthetic and do not occur in nature.
Where Perinone is used
The two main perinone pigments are used for their stable orange and red colours. They are found in artistic and industrial applications where bright, lasting colour is needed. Additionally, perinone compounds are studied and used as organic semiconductors in electronics.
Orange around the world
What the orange family means from country to country.
The lowest band of the flag is orange, often called apricot, after the national fruit. The constitution says it stands for the creative talent and hard work of the people.
Politics and protestNature and renewalPrideSource: Flag of ArmeniaThe flag is split corner to corner. The orange half stands for the Buddhist tradition, and the white dragon across the middle for purity.
Sacred and holySource: Flag of BhutanOn 30 September people wear orange shirts to remember the children sent to residential schools. Phyllis Webstad's new orange shirt was taken from her on her first day at one.
Mourning and deathPolitics and protestGriefSource: National Day for Truth and ReconciliationOrange is also the colour of the New Democratic Party. Its sweep of Quebec seats in the 2011 election was called the Orange Wave.
Politics and protestSource: New Democratic PartyThe flag shows the island in copper orange on white. The colour recalls copper, which was mined here in ancient times and may have taken its name from Cyprus.
Politics and protestNature and renewalSource: Flag of CyprusThe orange stripe of the flag stands for Protestants, the followers of William of Orange. In Northern Ireland the Orange Order still marches each 12 July in orange sashes.
Politics and protestSource: Orange OrderShades and relatives of Perinone
Perinone pigments exist mainly as two isomers: the orange trans form (PO43) and the red cis form (PR194). These are sometimes confused with other synthetic organic pigments but are distinct in their chemical structure and colour properties.
Questions people ask about Perinone
What colour is perinone?
Perinone pigments come in two main colours: orange (trans isomer) and red (cis isomer).
Where does the name perinone come from?
The sources do not specify the origin of the name 'perinone'; it is based on its chemical structure.
How is perinone made?
Perinone is synthesised by reacting naphthalenetetracarboxylic dianhydride with o-phenylenediamine, producing two isomers.
What are the uses of perinone pigments?
Perinone pigments are used for their stable orange and red colours in art and industry, and as organic semiconductors.
Good reading and sources
The facts on this page come from the Wikipedia article "Perinone", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). Rang rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.
It may contain mistakes. The swatch is an approximation: named colours are not fixed standards, and every screen shows them a little differently. If something is wrong, tell us. Last refreshed 2026-10-03.
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