Overview
Pigment Blue 1 (CAS 1325-87-7 ), also known as C.I. Pigment Blue 1, is a triarylmethane-based organic pigment delivering a bright, reddish-blue shade across a range of industrial substrates.
It is valued in colorant formulations where vivid hue intensity and tinting strength are the primary selection criteria. In printing inks, it produces high-chroma blue tones suited to packaging applications.
Visual impact drives color specification in these sectors. Coatings formulators incorporate it into architectural and industrial finishes where a clean, saturated blue is required at relatively low pigment loading.
Textile and paper dyeing operations use it to achieve consistent surface coloration, particularly in applications where cost-effective blue shading is prioritized over extreme lightfastness demands.
Plastics compounders apply it in mass coloration of polymer substrates, including packaging films and molded articles. This versatility makes it a staple in the global colorant market for various polymers.
The product is supplied as a dry powder, typically in press cake or flushed paste form for ink and coating applications. This ensures ease of integration into existing manufacturing workflows.
Technical grade is the standard commercial offering, with particle size and dispersibility specifications varying by end-use requirement. Quality control ensures consistency across different production batches.
Packaging ranges from small drums to bulk quantities depending on supplier and application volume. Proper storage in a cool, dry environment is recommended to maintain the integrity of the pigment powder.
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Physical Properties
| Density | 2.003[at 20℃] |
| Water Solubility | 100μg/L at 20℃ |
| Vapor Pressure | 0Pa at 25℃ |
| Log P | 1 at 20℃ |
Safety & Handling
Danger GHS05 GHS09 Hazard Statements H318 Causes serious eye damage H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H413 May cause long lasting harmful effects to aquatic life Precautionary Statements P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P391 Collect spillage. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Other Names
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Chemical Properties
- CAS Number
- 1325-87-7
- EC Number
- 215-410-7
- Mol. Weight
- 478.7
- Category
- Pigments & Colorants