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Colour Index Code
PR112
Naphthol Red
- Chemistry
- Azo naphthol
- Origin
- Synthetic organic.
- History
- A bright, warm red introduced mid-20th century; reasonably lightfast.
- Toxicity
- Non-toxic.
Naphthol Red (PR112) is Azo naphthol. In our watercolour range it is semi-transparent, no granulation, very good lightfastness.
- Transparency
- Semi-Transparent
- Granulation
- NO
- Staining
- Medium
- Lightfastness
- Very Good
PR112: Questions & Answers
What is PR112?
PR112 (Naphthol Red) is Azo naphthol. Synthetic organic..
What is the chemistry of PR112?
PR112 is Azo naphthol.
Is PR112 toxic?
Non-toxic.
Is PR112 lightfast?
In the Michael Harding range, colours using PR112 are rated very good for lightfastness.
Is PR112 transparent or opaque?
PR112 is semi-transparent.
Does PR112 granulate?
In watercolour, PR112 is non-granulating.
Which Michael Harding colours use PR112?
PR112 appears in 7 Michael Harding colours: Brilliant Pink, Corinthian Purple, Belladonna, Rich Scarlet, Brilliant Pink, Corinthian Purple and 1 more.
Michael Harding colours using PR112
7 colours across both rangesLightfastness: ExcellentOil Colours containing PR112
3 colours
No. 207 Brilliant Pink
Series 2
OpaqueAverageCoolⓋ Vegan
- Pigment
- PW6, PR112, PR122
- Type
- Organic/Inorganic
- Lightfastness
- Excellent
- Oil Content
- Low
- Tint Power
- Average
Watercolours containing PR112
4 colours
No. W212 Rich Scarlet
Series 2
Semi-TransparentWarm
- Pigment
- PR112
- Lightfastness
- Very Good
- Tint Power
- 3
No. W207 Brilliant Pink
Series 2
Semi-OpaqueWarm
- Pigment
- PW6, PW4, PR112, PR122
- Lightfastness
- Excellent
- Tint Power
- 3
| Colour | Medium | Transparency | Lightfastness | Granulation |
|---|---|---|---|---|
| Brilliant Pink No. 207 | Oil | Opaque | Excellent | — |
| Corinthian Purple No. 255 | Oil | Semi-Transparent | Excellent | — |
| Belladonna No. 241 | Oil | Transparent | Excellent | — |
| Rich Scarlet W212 | Watercolour | Semi-Transparent | Very Good | NO |
| Brilliant Pink W207 | Watercolour | Semi-Opaque | Excellent | NO |
| Corinthian Purple W166 | Watercolour | Transparent | Very Good | NO |
| Belladonna W168 | Watercolour | Semi-Transparent | Very Good | YES |
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Pigments in the same family
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