Pigment Red 49:1 CAS 1103-38-4

Introduction：Basic information about Pigment Red 49:1 CAS 1103-38-4, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

Pigment Red 49:1 Basic information

• Product Name: Pigment Red 49:1
• Synonyms: PIGMENT RED 49:1;2-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid barium salt (2:1);lithol red ba;Barium bis[2-[(2-hydroxynaphthyl)azo]naphthalenesulphonate];Barium bis[2-(2-hydroxy-1-naphthylazo)-1-naphthalenesulfonate];D & C Red No.12;Pigment Red 49(Ba);PR49:1 BARIUM LITHOL
• CAS: 1103-38-4
• MF: C20H16BaN2O4S
• MW: 517.75
• EINECS: 214-160-6
• Product Categories: Organic-metal salt
• Mol File: 1103-38-4.mol

Pigment Red 49:1 Chemical Properties

• density: 1.66[at 20℃]
• LogP: 4.024 (est)
• CAS DataBase Reference: 1103-38-4(CAS DataBase Reference)
• EPA Substance Registry System: C.I. Pigment Red 49, barium salt (2:1) (1103-38-4)

Safety Information

• TSCA: TSCA listed
• Hazardous Substances Data: 1103-38-4(Hazardous Substances Data)

Pigment Red 49:1 Usage And Synthesis

Uses

Pigment Red 49:1 is a red azo pigment, popular as artists'' coloring materials in the first half of the twentieth century

Flammability and Explosibility

Not classified

Synthesis

Dissolve 2-naphthylamine-1-sulfonic acid (tuliptic acid) in ammonia or sodium hydroxide, cool down to 0-5 ??, add hydrochloric acid acid precipitation, add sodium nitrite aqueous solution in 30min, diazotization reaction, reaction 1h, standby; dissolve 2-naphthol in sodium hydroxide aqueous solution, add diazotization salt at 10 ??, 30min, coupled at pH = 9.5-10, add hot rosin soap solution and Barium chloride aqueous solution, pH = 8.5, 60 ?? reaction 1h, filtration, washing, drying.  

Properties and Applications

• TEST ITEMS:

  SPECIFICATION

• APPEARANCE:

  RED POWDER

• SHADE:

  YELLOWISH

• HEAT RESISTANCE:

  160 °C min

• LIGHT FASTNESS:

  4

• ACID RESISTANCE:

  5

• ALKALI RESISTANCE:

  4

• FASTNESS TO BLEEDING:

  5

• OIL ABSORPTION:

  45-50%

• SPECIFIC SURFACE:

  26 m ² /g

• DENSITY:

  1.70 g/cm ³

• RESIDUE ON 80 MESH:

  5.0% max

• WATER SOLUBLE:

  1.0% max

• VOLATITE 105 °C:

  1.0% max

• TINTING STRENGTH:

  100-105 %