Green S

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Structural formula
Structure of green S
General
Surname Green S
other names
  • Brilliant acid green BS
  • CI 44090
  • CI Acid Green 50
  • Acilan Green BS
  • Lissamine green B or BN
  • Wool green B
  • Acid Brilliant Green BS
  • E  142
Molecular formula C 27 H 25 N 2 NaO 7 S 2
Brief description

dark brown to black powder

External identifiers / databases
CAS number 3087-16-9
EC number 221-409-2
ECHA InfoCard 100.019.463
PubChem 91525
ChemSpider 82646
Wikidata Q420143
properties
Molar mass 576.62 g mol −1
Physical state

firmly

solubility

easily soluble in water, moderately soluble in ethanol and glycerine , insoluble in vegetable oils

safety instructions
GHS labeling of hazardous substances
07 - Warning

Caution

H and P phrases H: 302-315-319-335
P: 261-305 + 351 + 338
Toxicological data

2000 mg kg −1 ( LD 50 ,  rat ,  oral )

As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Brilliant acid green BS , also known as green S , is a triphenylmethane dye that is used as a food coloring (E 142).

properties

Green S is a moderately lightfast, heat-resistant, slightly alkali-resistant and acid-resistant powder which, with its green color (λ max 632 nm), dissolves well in water.

use

It is used to color food (canned peas) and confectionery (peppermint color) as well as beverages, cosmetics and wool, leather and paper.

It is banned as a food additive in the United States , Canada , Japan, and Norway , although the body excretes it unchanged.

toxicology

Brilliant acid green is practically not absorbed by the intestine and excreted within 7 hours. In 2001 the EU Commission set a permitted daily dose of 5 mg / kg body weight.

Individual evidence

  1. ↑ Entry on E 142: Green S in the European database for food additives, accessed on June 14, 2020.
  2. ↑ Grün S data sheet at Acros, accessed on February 26, 2010.
  3. ↑ a b c Entry on brilliant acid green BS. In: Römpp Online . Georg Thieme Verlag, accessed on March 7, 2014.
  4. ↑ a b data sheet Lissamine ™ Green B from Sigma-Aldrich , accessed on April 3, 2011 ( PDF ).
  5. ↑ Entry on Green S in the ChemIDplus database of the United States National Library of Medicine (NLM) .
  6. ^ Food-warenkunde.de: E 142 - brilliant acid green BS .

Web links

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