PIGMENT RED 146

Pigment Red 146 is widely used in coatings, plastics, printing inks, and paints, where it delivers a strong bluish-red shade. 
Pigment Red 146's valued especially in the printing industry for gravure and flexographic inks due to its compatibility with various binders and substrates.
Pigment Red 146 belongs to the azo pigment family, specifically the monoazo class, which means it contains a single azo (-N=N-) group that links two aromatic structures. 

CAS Number: 5280-68-2
Molecular Formula: C33H27ClN4O6
Molecular Weight: 611.04
EINECS Number: 226-103-2

Synonyms: DTXSID3063754, EINECS 226-103-2, N-(4-Chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-((2-methoxy-5-((phenylamino)carbonyl)phenyl)azo)naphthalene-2-carboxamide, EC 226-103-2
2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-((2-methoxy-5-((phenylamino)carbonyl)phenyl)azo)-, 2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-(2-(2-methoxy-5-((phenylamino)carbonyl)phenyl)diazenyl)-, 2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-, 226-103-2, N-(4-Chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]naphthalene-2-carboxamide
2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[2-[2-methoxy-5-[(phenylamino)carbonyl]phenyl]diazenyl]-, DTXCID0041301, 2-Naphthalenecarboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-2-methoxy-5-(phenylamino)carbonylphenylazo-, 5280-68-2, 2-Naphthalenecarboxamide,N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-[(phenylamino)carbonyl]phenyl]azo]-, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]diazenyl]naphthalene-2-carboxamide, Pigment Red 146 (Technical Grade), (4Z)-N-(4-chloro-2,5-dimethoxyphenyl)-4-[[2-methoxy-5-(phenylcarbamoyl)phenyl]hydrazinylidene]-3-oxonaphthalene-2-carboxamide, N-(4-chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-[(1E)-2-[2-methoxy-5-(phenylcarbamoyl)phenyl]diazen-1-yl]naphthalene-2-carboxamide, Strength 95-105%, SCHEMBL12954942, SCHEMBL14497174, HY-D0383, MFCD00071995, AKOS037647858, AS-75061, CS-0010434, NS00044822, D93848, N-(4-Chloro-2,5-dimethoxyphenyl)-3-hydroxy-4-((2-methoxy-5-(phenylcarbamoyl)phenyl)diazenyl)-2-naphthamide.

Pigment Red 146 is an organic synthetic pigment primarily used in industrial and artistic applications due to its vivid red hue, excellent color strength, and moderate to good lightfastness.
These pigments are formed through a diazo coupling reaction, typically involving aromatic amines and coupling components like naphthols. 
In the case of Pigment Red 146, the pigment is often synthesized by coupling diazotized 3-amino-4-methoxybenzanilide with β-naphthol acetoacetanilide derivatives.

While it offers good dispersibility and tinting strength, it may not be as lightfast or weather-resistant as more complex or inorganic pigments like some quinacridones or cadmium reds. 
Therefore, it is more commonly chosen where cost efficiency and color brilliance are prioritized over extreme durability.
Pigment Red 146 is a bluish red pigment with very good solvent resistance. 

Pigment Red 146 is primarily used in printing inks, coatings, and paints. 
The printing ink industry uses C.I.NO.:PR146, Pigment Red 146 for letterpress and offset inks and also in packaging gravure and flexo printing inks. 
The prints tolerate white spirit, dibutyl phthalate, butter, soap, alkali, and acid. Moreover, they are also stable to clear lacquer coating. 

As far as heat stability goes, Pigment Red 146 retains its color value for 10 minutes at 200°C or for 30 minutes at 180°C. 
Pigment Red 146 also shows good lightfastness in textile printing. 
Pigment Red 146, which is also used in paints, is primarily applied in emulsion and architectural paints; it also lends color to general industrial paints in applications where durability is unimportant.

Pigment Red 146 may be used in combination with Molybdate Orange pigments to produce bright opaque shades of red. 
In polymers, Pigment Red 146 is only used to color rigid PVC. 
Pigment Red 146 is a suitable candidate for a variety of special applications.

The products are fast to overcoating and stable to nitro and acid catalyzed and polyester varnishes. 
Intense shades match step 5 on the Blue Scale for lightfastness.
Other areas of application include office articles and artists’ colors, cleaning agents, paper mass coloration, laundry markers, etc.

Pigment Red 146 belongs to the class of monoazo pigments, specifically a Naphthol AS pigment, which is widely recognized for delivering bright red shades with a bluish undertone. 
Its structure is derived from diazotization reactions involving aromatic amines and coupling with acetoacetanilide derivatives, which gives it good color strength and distinctive hues.

One of the reasons Pigment Red 146 is highly valued in printing applications is due to its excellent dispersion properties in both solvent- and water-based systems. 
Pigment Red 146 is particularly suited for flexographic and gravure printing inks, commonly used in packaging materials such as plastic films and paper products. 
The pigment provides a clean, transparent red that closely resembles magenta, making it a preferred choice in CMYK printing systems for accurate color reproduction.

In the plastics industry, it is used in polyolefins (like polyethylene and polypropylene), PVC, and sometimes in engineering plastics. 
While it performs well in these materials, its heat resistance is moderate, typically stable up to about 200–240°C, meaning it's more suitable for low to medium temperature processing. 
For applications requiring higher thermal stability, alternative pigments like Pigment Red 146 may be chosen.

Pigment Red 146 is slightly yellowish than pigment red 57:1. 
The specific surface area of Permanent Carmine FBB 02 is 36m2/g. 
Pigment Red 146 is mainly used for printing inks and coatings. 

The solvent resistance and sterilization treatment of printed samples are better than pigment red 57:1, heat stability 200℃/10min, 20℃ higher than pigment red 57:1, light resistance grade 5, better than pigment red 57:1 high 0.5-1 level; lightfastness level 7 (1/1SD) on fabric printing; also used in latex paint and architectural coatings, combined with molybdenum chrome orange to create a non-transparent red color; hard PVC coloring lightfastness level 8 Grade; brown with pigment yellow 83 and carbon black, used for wood coloring.
Pigment Red 146 is a naphthol carmine dye that can be used in aqueous inks or coatings.

Pigment Red 146's density is 1.5 g/cm3 and its pH value is 7.0.
Pigment Red 146s molecular weight is 611.04.
Pigment Red 146 is a commonly used commercial dye for bulk coloring of plastics and synthetic fibers and for surface coatings such as paints and inks.

Pigment Red 146 is a blue shade naphthol AS pigment. 
It exhibits good all round fastness properties. 
It is more suitable for water based applications. 

Used in water based packaging gravure and flexographic printing inks, PVC/ plastified PVC, water based paints and solvent paints.
Pigment Red 146 is a naphthol AS organic pigment. 
Exhibits good acid-, alkali-, alcohol-, ester-, benzene-, bleeding-, ketone- and soap resistance. 

Designed for letterpress & offset inks, packaging gravure inks, flexo printing inks, emulsion, architectural paints and general industrial paints. 
Pigment Red 146 can be used in combination with molybdate orange pigments to produce bright opaque shades of red.

Boiling point: 719.5±60.0 °C(Predicted)
Density: 1.33±0.1 g/cm3(Predicted)
storage temp.: 4°C, Inert atmosphere
pka: 10.06±0.70(Predicted)

Pigment Red 146 is chemically known as C.I. Pigment Red 146 (CAS Number: 5280-68-2) and has the molecular formula C18H12ClN3O3, reflecting the presence of aromatic rings, nitrogen atoms, and functional groups that contribute to its chromatic properties. 
It is part of the Disazo or Bisazo pigment class in some classifications, due to structural variations in its extended systems.
Pigment Red 146 is not soluble in water, which makes it ideal as a colorant for materials where resistance to bleeding and migration is important, such as plastics and solvent-based inks. 

Pigment Red 146s insolubility also improves its resistance to many chemicals, allowing it to retain color in chemically active environments.
In the automotive and industrial coating sectors, Pigment Red 146 is used in interior applications, primers, or decorative parts that are not constantly exposed to direct sunlight. 
Pigment Red 146 is also found in stationery, textiles, and packaging materials, where its bright red tone enhances product appeal.

From a toxicological and environmental standpoint, Pigment Red 146 is generally considered safe for industrial use when handled appropriately. 
However, like many synthetic azo pigments, there is concern over potential degradation into aromatic amines under extreme conditions (e.g., high temperature or pH), some of which may be hazardous. 
For this reason, regulatory agencies may require testing or labeling for certain consumer applications, especially in toys or food-contact materials.

Pigment Red 146 is commonly produced in the form of a fine powder, and during processing, care must be taken to avoid dust inhalation or skin contact, as prolonged exposure may cause irritation or respiratory issues, though it is not classified as highly hazardous.
In summary, Pigment Red 146 is a cost-effective, high-performance Pigment Red 146 that strikes a balance between visual quality and manufacturing efficiency, widely used across multiple industries where its rich, slightly bluish red tone is desired.

Pigment Red 146 is also used in water-based emulsion paints, where it contributes to decorative finishes on walls, furniture, and crafts.
Its ability to retain vibrancy over time in interior environments makes it popular in architectural coatings. 
However, for outdoor or automotive use, it may be blended with more lightfast pigments to improve durability under UV exposure.

From a regulatory standpoint, Pigment Red 146 is generally not considered hazardous, but its safety depends on the purity and manufacturing method. 
In regions like the EU, US, and Japan, it must meet certain purity criteria, especially for applications involving human contact (e.g., toys, textiles, cosmetics). 
Some pigments in this class may degrade under strong acid or base conditions, potentially releasing trace levels of aromatic amines, which are subject to health scrutiny.

In terms of environmental impact, it is classified as a non-biodegradable substance, like most organic pigments, and therefore proper waste management is essential. 
Fortunately, it does not leach easily from finished products, minimizing its ecological mobility.

Finally, pigment manufacturers often offer surface-treated grades of Pigment Red 146 to improve properties like weather resistance, dispersibility, and compatibility with specific resin systems. 
These treated variants extend its usability in higher-end industrial coatings, laminates, and high-gloss packaging.

Uses Of Pigment Red 146:
Pigment Red 146 can be used for aqueous inkjet set and inkjet printing.
Pigment Red 146 is widely used in the printing industry, particularly in flexographic and gravure printing inks, where it delivers vibrant, bluish-red tones that are ideal for printing on flexible packaging materials such as plastic films, foils, and laminated paper. 
Its excellent transparency and color strength make it a preferred pigment for use in CMYK four-color process printing, helping to reproduce vivid images and sharp text with high visual appeal.

In the paint and coatings industry, Pigment Red 146 is used in emulsion paints, decorative wall finishes, and artist colors, where its bright red hue enhances the aesthetics of interior surfaces. 
While it may not offer the same degree of lightfastness as some higher-performance pigments, it is still suitable for many indoor applications, especially in cost-sensitive decorative and DIY paints.

This pigment is also utilized in the plastics industry, where it is incorporated into polyolefins like polypropylene and polyethylene, PVC, and rubber compounds to color household goods, packaging, and toys. 
However, due to its moderate thermal stability, it is generally used in plastics that are processed at lower temperatures to prevent degradation or discoloration during molding or extrusion.

In the textile industry, Pigment Red 146 can be applied via pigment printing processes on fabrics, where it adheres to the surface of textiles without forming chemical bonds, making it useful for fashion apparel, home textiles, and promotional materials that do not require frequent washing.
Additionally, it finds application in stationery products, such as colored pencils, markers, crayons, and inks for pens, where its vivid and attractive shade enhances the visual quality of writing and drawing tools. 
In coatings for wood, paper, and leather, it contributes to vibrant finishes and decorative surfaces in furniture and accessories.

Specialized grades of Pigment Red 146 are also used in cosmetic formulations, such as lipstick and blush, though only high-purity forms that meet strict safety standards are allowed for such purposes. 
In some cases, it is also employed in automotive primers or industrial coatings when cost-effective color is needed, although it is usually blended with more lightfast pigments for outdoor use.
In the cosmetic and personal care industry, highly purified grades of Pigment Red 146 are sometimes used as a colorant in lipsticks, blushes, and compact powders, where its warm, reddish hue can enhance natural skin tones. 

However, this use is strictly regulated, and only pigment types that meet cosmetic-grade purity standards and safety guidelines are permitted for application near the skin or mucous membranes.
In the realm of industrial and protective coatings, Pigment Red 146 may be incorporated into primers and undercoats as a tinting agent, especially where bright red hues are desirable at a low cost. 
Although it does not offer superior resistance to light, heat, or chemicals compared to high-performance pigments, it is still used in formulations where long-term outdoor exposure is not a primary concern.

Pigment Red 146 also plays a role in the leather industry, where it is used to dye or finish leather goods such as handbags, belts, shoes, and upholstery. It provides a vivid, attractive red color that enhances the aesthetic value of leather while maintaining compatibility with various finishes and topcoats.

In construction materials, it may be used in colored concrete, synthetic stuccos, or construction adhesives for architectural or decorative effects. Although not as common as inorganic pigments for such purposes, its use in indoor environments or decorative touches adds to its versatility across product categories.

The pigment is sometimes used in ceramic or glass enamels when mixed with other pigments or frits, though again, this is limited to specific applications where lower firing temperatures or surface-level coloration is acceptable.

Additionally, in education and hobby markets, Pigment Red 146 is found in a range of children’s art supplies, such as poster paints, modeling clays, and washable markers, where cost-effective and vivid colors are prioritized. These formulations are designed for ease of use, cleanability, and safe handling, particularly when the pigment is embedded in water-based media.

Safety Profile Of Pigment Red 146:
Pigment Red 146, while generally considered to be of low acute toxicity, can pose several potential health and environmental hazards depending on its form, handling conditions, and level of exposure. 
In its powdered state, the pigment can release fine particulate matter (dust) into the air, which may cause mechanical irritation to the eyes, skin, and respiratory tract when inhaled or contacted directly, particularly in occupational settings without adequate ventilation or personal protective equipment.

Although Pigment Red 146 is not classified as carcinogenic by most regulatory authorities, some grades or manufacturing processes may contain trace levels of aromatic amines or residual impurities that raise concerns regarding long-term exposure risks, especially if the pigment is not produced under strict quality control. 
Therefore, chronic inhalation or prolonged skin contact in industrial environments could present occupational health risks, warranting appropriate engineering controls and safety procedures.

In terms of environmental hazards, Pigment Red 146 is classified as practically insoluble in water, but if released in large quantities into aquatic systems, the fine pigment particles could settle in sediments, where they might pose long-term ecological impacts, particularly to bottom-dwelling organisms. 
As a synthetic organic pigment, it does not readily biodegrade, and its persistence in the environment raises concerns about bioaccumulation in aquatic ecosystems, although no direct evidence currently classifies it as bioaccumulative.

There is also the potential for thermal decomposition under high heat, which can release irritating or potentially harmful fumes, including oxides of nitrogen and carbon, especially if the pigment is subjected to fire or improper incineration. 
As such, emergency response teams are advised to wear respiratory protection and fire-retardant gear when dealing with fires involving organic pigments like Red 146.