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: C₂₀H₁₆N₄O₅S·Na

InChI: InChI=1S/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;/h2-11,18,25H,1H3,(H,27,28,29);

InChI key: InChIKey=LQNCZVUOLJAMAW-UHFFFAOYSA-N

SMILES: [Na].O=C1N(N=C(C)C1N=NC2=C(O)C=C(C=3C=CC=CC23)S(=O)(=O)O)C=4C=CC=CC4

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
• Anthranol Chrome Red ECB
• Atlantichrome Fast Red B
• Azochromol Red G
• Calcochrome Fast Red ECB
• Chromaven Fast Red B
• Chrome Bordeaux R
• Chrome Fast Red 2B
• Chrome Fast Red B
• Chrome Red
• Chrome Red B
• Chrome Red ECB
• Chrome Red MB
• Diacromo Red B
• Diacromo Red MB
• Diamond Red ECB
• Durochrome Red B
• Eriochromered
• Fenakrom Red B
• Hbt-R 615
• Hispacrom Red 2B
• Java Chrome Red B
• Java Unichrome Red B
• Magracrom Bordeaux 2A
• Mitsui Chrome Red B
• Monochrome Red BS
• NSC 47717
• Omega Chrome Red B
• Orthochrome Bordeaux B
• Pontachrome Fast Red E
• Salicine Chrome Bordeaux R
• Solochrome Leather Red ER
• Solochrome Red ER
• Sunchromine Red B
• Superchrome Red ECB
• Symulon Chrome Red B
• Tertrochrome Red 2B
• Yodochrome Red BB
• sodium (4Z)-4-[2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate
• sodium 3-hydroxy-4-[(E)-(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)diazenyl]naphthalene-1-sulfonate
• C.I. Mordant Red 7
• Eriochrome Red B
• C.I. Mordant Red 7, monosodium salt
• C.I. Mordant Red 7, monosodium salt (8CI)
• C.I. 18760
• C.I.Mordant Red 11

1-Naphthalenesulfonic acid,4-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-3-hydroxy-, monosodium salt

CAS: 3618-63-1

• Formula: C₂₀H₁₅N₄NaO₅S
• Purity: 85%
• Color and Shape: Solid
• Molecular weight: 446.4116699999999

C.I. 18760

CAS: 3618-63-1

C.I. 18760: bluish-red powder dye turns orange in dilute sulfuric acid, red in caustic soda, …

• Formula: C₂₀H₁₆N₄NaO₅S
• Purity: 98%
• Color and Shape: Solid
• Molecular weight: 447.42

Eriochrome Red B

CAS: 3618-63-1

• Formula: C₂₀H₁₅N₄NaO₅S
• Color and Shape: Light yellow to Amber to Dark green powder to crystal
• Molecular weight: 446.41

Mordant red 7

CAS: 3618-63-1

Mordant Red 7 is a synthetic organic dye that is used as a mordant in …

• Formula: C₂₀H₁₆N₄O₅S
• Purity: Min. 95%
• Molecular weight: 424.43 g/mol