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>BSI Standards >87 PAINT AND COLOUR INDUSTRIES>87.040 Paints and varnishes>BS 7897-2:1997 Specification for lac and shellac Machine-made shellac
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immediate downloadReleased: 1997-08-15
BS 7897-2:1997 Specification for lac and shellac Machine-made shellac

BS 7897-2:1997

Specification for lac and shellac Machine-made shellac

CURRENCY
292.8 EUR
Standard number:BS 7897-2:1997
Pages:36
Released:1997-08-15
ISBN:0 580 27941 3
Status:Standard
DESCRIPTION

BS 7897-2:1997


This standard BS 7897-2:1997 Specification for lac and shellac is classified in these ICS categories:
  • 87.040 Paints and varnishes

Specifies four main types of machine-made shellac based on different methods of manufacture. Each type is graded on the basis of colour. Requirements for matter insoluble in hot alcohol are given along with optional requirements for: volatile matter, wax, ash, lead and grit content, matter soluble in water, iodine and acid values, heat polymerisation and flow tests.
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