Carbon, PVC, and dead bugs: Why are vinyl records black?
Vinyl records are usually black because the colour began as a by-product of making older shellac discs more durable. Shellac, a resin secreted by insects, was fragile, so manufacturers added carbon powder to strengthen it; when PVC replaced shellac, the black tradition continued even though the plastic is naturally clear.
Several explanations have been proposed for keeping records black, including familiarity for buyers moving to a new format and the possibility that carbon helps reduce dust attracted by static. Neither fully explains the choice: early RCA 45s were colour-coded by genre, and black records still collect dust. The article suggests habit may be the simplest reason, while colourful pressings show black is not essential.
- Carbon powder made fragile shellac records stronger and black.
- PVC records kept the colour after shellac was replaced.
- Habit may explain why black remains the standard.
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Vinyl records were once made from shellac, a resin produced by insects. Because shellac discs were fragile, manufacturers mixed in carbon powder to make them stronger, which made the records black.
Later, makers switched to PVC, a naturally clear plastic, but kept using black. Some coloured records appeared, including early RCA 45s that used different colours for different music genres, so black was not essential to the format.
The black finish may have helped buyers recognise the familiar disc, and carbon may reduce static, though black records still attract dust. The colour’s persistence may owe mostly to habit.