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CAS 3618-63-1

:

Chrome Red

Description:
Chrome Red, identified by its CAS number 3618-63-1, is a synthetic inorganic pigment primarily composed of lead chromate. It is known for its vibrant red hue and excellent opacity, making it a popular choice in various applications, including paints, coatings, plastics, and ceramics. The pigment exhibits good lightfastness and stability under normal conditions, which contributes to its durability in outdoor applications. However, due to the presence of lead, Chrome Red poses health and environmental risks, leading to regulatory restrictions in many regions. It is important to handle this substance with care, using appropriate safety measures to minimize exposure. Additionally, alternatives to lead-based pigments are increasingly being sought in the industry to mitigate these risks while maintaining color quality. Overall, while Chrome Red is valued for its aesthetic properties, its use is becoming more limited due to safety concerns.
Formula:C20H15N4NaO5S
InChI:InChI=1/C20H16N4O5S.Na/c1-12-18(20(26)24(23-12)13-7-3-2-4-8-13)21-22-19-15-10-6-5-9-14(15)17(11-16(19)25)30(27,28)29;/h2-11,18,21H,1H3,(H,27,28,29);/q;+1/p-1/b22-19-;
InChI key:InChIKey=LQNCZVUOLJAMAW-UHFFFAOYSA-N
SMILES:N(=NC1C(=O)N(N=C1C)C2=CC=CC=C2)C=3C4=C(C(S(=O)(=O)O)=CC3O)C=CC=C4.[Na]
Synonyms:
  • (4Z)-4-[(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)hydrazono]-3-oxo-3,4-dihydronaphthalene-1-sulfonic acid
  • 1-Naphthalenesulfonic acid, 4-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3-hydroxy-, monosodium salt
  • 1-Naphthalenesulfonic acid, 4-[2-(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)diazenyl]-3-hydroxy-, sodium salt (1:1)
  • Acid Chrome Bordeaux 2A
  • Acid Chrome Bordeaux B
  • Acid Chrome Red
  • Acid Chrome Red B
  • Acid Mordant Red B
  • Airedale Red BC
  • Alizarine Brilliant Red 3R
  • See more synonyms
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