Pigments

Description

Pigments · CAS 6041-94-7 · C23H15Cl2N3O2. Melting Point: 590 to 592 °F (NTP, 1992).

Identification

CAS Registry Number	6041-94-7
PubChem CID	22399
Molecular formula	C23H15Cl2N3O2
IUPAC name	4-[(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenylnaphthalene-2-carboxamide

Computed Descriptors

Molecular Weight	436.3
XLogP3	7.2
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	4
Exact Mass	435.0541321
Monoisotopic Mass	435.0541321
Topological Polar Surface Area	74.1
Heavy Atom Count	30
Formal Charge	0

Physical & Chemical Properties

Melting Point	590 to 592 °F (NTP, 1992)

Physical description & handling notes

• Yellowish red solid with a tint of pink or dark red powder. (NTP, 1992)
• Other Solid; Wet Solid; Dry Powder; CBI; Liquid
• less than 1 mg/mL at 66 °F (NTP, 1992)

Regulatory Status

GHS notification summary	99.7% (334 / 335)

GHS Hazard Classification

GHS notification summary	99.7% (334 / 335)

Documented Uses

• Plastics -> Typical concentration range in plastic materials -> 2%
• Substance listed with specific concentration in tattoo ink and/or permanent make up according to EU Commission Regulation 2020/2081. The concentration limit (by weight) is 0.1%.
• Plastics -> Polymer Type -> Polyolefin-I; PUR; Polyolefin-II; PVC (soft); ABS; PVC (rigid); PET; PMMA; PA; PC; (E)PS
• Not Known or Reasonably Ascertainable
• Synthetic Dye and Pigment Manufacturing
• Paint and Coating Manufacturing

Synonyms

CCRIS 6092; EINECS 227-930-1; 4-[(2,5-Dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide; DTXSID3025914; EC 227-930-1; 2-Naphthalenecarboxamide, 4-((2,5-dichlorophenyl)azo)-3-hydroxy-N-phenyl-; 2-Naphthalenecarboxamide, 4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenyl-; 4-((2,5-Dichlorophenyl)azo)-3-hydroxy-N-phenylnaphthalene-2-carboxamide; 2-Naphthalenecarboxamide, 4-(2-(2,5-dichlorophenyl)diazenyl)-3-hydroxy-N-phenyl-; 227-930-1; 2-Naphthalenecarboxamide, 4-[2-(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenyl-; SILOPOL RED R; SILOSOL RED RHN; IRGALITE RED FBS; IRGALITE RED FBX; SCARLET 2S

Frequently Asked Questions

What are the CAS number and molecular formula of Pigments?

CAS 6041-94-7; molecular formula C23H15Cl2N3O2; molecular weight — g/mol.

What other names is Pigments known by?

CCRIS 6092, EINECS 227-930-1, 4-[(2,5-Dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide, DTXSID3025914, EC 227-930-1, 2-Naphthalenecarboxamide, 4-((2,5-dichlorophenyl)azo)-3-hydroxy-N-phenyl-.

Is Pigments classified as hazardous?

99.7% of GHS notifications report no hazard classification (334 of 335).

What are the key physical properties of Pigments?

Melting Point: 590 to 592 °F (NTP, 1992).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.