Pigment Blue 1

Product NamePIGMENT BLUE 1
SynonymsC.I.Pigment Blue 1; C.I.PB1; PB1; P.B.1
CAS NO.1325-87-7
Molecular Weight479.7
Molecular FormulaC33H41N3
ColorBlue powder

Molecular structure formula:

Fastness Properties of Pigment Blue 1:

Light Fastness4-5
Heat Resistance(℃)150
Water Resistance5
Oil Resistance3-4
Acid Resistance2
Alkali Resistance4-5
Alcohol Resistance2

Main application: Water based ink, Offset ink, Solvent based ink, Plastic, Paint, Textile printing

We have various pigment grades and properties to meet different customers’ needs, please specify your application and requirements so that we can recommend accordingly.  E-mail: sy@sypigment.com

Product Description of Pigment Blue 1:

Irgalite Blue TNC has a specific surface area of 53m2/g, giving a pure red light blue. Although this hue can also be obtained with carbazole violet, α-, ε-copper phthalocyanine, the color of C.I. Pigment Blue 1 is more vivid. It can be made into PTM lake, and it can also be made into PM, PT and SM lakes. Pigment Blue 1 is relatively light fast, and 1/3SD printed samples can reach level 4. It is mainly used for special printing inks such as publication printing inks, nitrocellulose binder-based packaging printing inks, and can also be used for wallpaper, printer ribbons and paper Coloring etc.Mainly used for coloring inks and cultural and educational supplies.

Pigment Blue 1, in the form of a blue powder, is a triarylcarbonium (PTMA) dye that can be used in printing ink applications. This product has a specific gravity approximately between 1.60 and 1.80, a bulk volume between 2.8 and 3.2 l/kg, and an average particle size between 50 and 150 nanometers.

TDS (Pigment Blue 1) MSDS (Pigment Blue 1)


  • Pigment Blue 1
  • 1325-87-7
  • 36396-19-7
  • [4-[bis[4-(diethylamino)phenyl]methylidene]naphthalen-1-ylidene]-ethylazanium
  • Basic Blue 7 parent
  • SCHEMBL766928
  • CHEMBL3306208
  • DTXSID1047996
  • ZINC4706999
  • C33H40N3+
  • AKOS015913908
  • MCULE-4843534061
  • Ethanaminium, N-(4-((4-(diethylamino)phenyl)(4-(ethylamino)-1-naphthalenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl
  • O162
  • 325P877

IUPAC Name:  [4-[bis[4-(diethylamino)phenyl]methylidene]naphthalen-1-ylidene]-ethylazanium

InChI: InChI=1S/C33H39N3/c1-6-34-32-24-23-31(29-13-11-12-14-30(29)32)33(25-15-19-27(20-16-25)35(7-2)8-3)26-17-21-28(22-18-26)36(9-4)10-5/h11-24H,6-10H2,1-5H3/p+1


Canonical SMILES: CC[NH+]=C1C=CC(=C(C2=CC=C(C=C2)N(CC)CC)C3=CC=C(C=C3)N(CC)CC)C4=CC=CC=C14

Property NameProperty Value
Molecular Weight478.7
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count2
Rotatable Bond Count9
Exact Mass478.3222233
Monoisotopic Mass478.3222233
Topological Polar Surface Area20.4 Ų
Heavy Atom Count36
Formal Charge1
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently-Bonded Unit Count1
Compound Is CanonicalizedYes