The basic information, characteristics and applications of pigment Yellow 168

Basic Information, Characteristics and Applications of Pigment Yellow 168 I. Basic Information

In the large family of chemical substances, each substance has its unique identity, and pigments are no exception. What is to be introduced here is a kind of Pigment called "Pigment Yellow 168". Its English name is like its exclusive business card in the chemical world, clearly distinguishing it from other substances.

This pigment also has an interesting Chinese alternative name, called "WGP Yellow/Yellow WGP", which is like a friendly nickname for it in the context of Chinese culture, making it easier for people to mention it in communication and use.

Every chemical substance has its specific number, which is as unique as our ID card number. The CAS number of "Pigment Yellow 168" is "71832-85-4", and this number plays a crucial role in the retrieval, identification of chemical substances, as well as related scientific research and industrial production.

From a microscopic molecular perspective, its molecular formula is "C16H12CaClN4O7S". This complex molecular formula is like a blueprint of its molecular structure, detailing the types and quantities of various atoms that make up this pigment molecule. Based on this molecular formula, its molecular weight is calculated to be "479.8845". This value precisely reflects the relative mass of a molecule and has irreplaceable significance in aspects such as the amount of substance and the measurement of chemical reactions.

Ii. Physical and Chemical Properties

Among the numerous characteristics of pigments, hue or color light is one of the most intuitive and important features. The hue or light of "Pigment Yellow 168" presents a unique charm. Some materials describe it as bright green and yellow, just like the willow branches that have just sprouted new buds in spring, with a vibrant and energetic green tone accompanied by a bright yellow glow. There are also other sources that describe it as a bright orange, just like a ripe orange in autumn, exuding a rich and passionate color aroma. This difference in hue description may be related to the observation conditions, the reference standards used, or the performance of the pigment itself in different environments.

Light fastness is a key indicator for measuring the stability of pigments under light conditions. "Pigment Yellow 168" performs quite well in this aspect, achieving a light fastness of grade 6. This means that under a certain intensity and duration of light, it can maintain its own color well and will not fade or change color easily. Just like a carefully painted outdoor mural, the parts that use this kind of pigment can still maintain their original color and style under the long-term exposure to sunlight.

In terms of lightfastness, when it is added to transparent polyvinyl chloride at a ratio of 1%, its lightfastness is grade 6-7 (grade 7 for 1/3 of the standard depth). This characteristic makes it have great application potential in plastic products that need to be exposed to sunlight for a long time. For instance, some outdoor plastic signboards or plastic gardening supplies, if made of materials containing such pigments, can maintain their bright colors for a relatively long time and will not lose their luster due to intense sunlight exposure.

Heat resistance is also an important property of pigments. In the material of high-density polyethylene, "Pigment Yellow 168" has demonstrated remarkable thermal stability and can remain at a high temperature of 240-260℃ for 5 minutes. This characteristic enables it to play a significant role in some plastic products that require high-temperature processing or are used in high-temperature environments. For instance, in the production process of some plastic products that require high-temperature injection molding, this pigment will not undergo adverse phenomena such as decomposition or discoloration due to high temperatures.

Iii. Pigment Characteristics

The Pigment variety "Pigment Yellow 168" has a unique chemical structure. It is a calcium salt lake with a similar structure to CI pigment Yellow 61 and Pigment Yellow 62. This similar structure endows it with a unique color expression. It can give a slightly greenish-yellow tone, which lies between CI. Between pigment Yellow 1 and Pigment Yellow 3, it's as if a delicate balance has been found between two different tones, forming a unique color.

During the use of chemical substances, solvent resistance and migration resistance are important aspects for evaluating their performance. For "Pigment Yellow 168", it has excellent solvent resistance and migration resistance to aliphatic hydrocarbon and aromatic hydrocarbon solvents. This means that when it comes into contact with these solvents, it will not be easily dissolved or undergo migration. For instance, in some paint or ink formulations containing aliphatic hydrocarbon or aromatic hydrocarbon solvents, when using such pigments, there is no need to worry about problems such as color leakage or uneven distribution due to the presence of solvents, thus ensuring the color stability and quality of the final product.

Iv. Main Uses

Paint

In the field of coatings, "Pigment Yellow 168" can be regarded as a dazzling star. Especially in high-end industrial coatings, its performance is truly outstanding. Take automotive paint (OEM) for example. As an important means of transportation in modern society, the aesthetic appeal and durability of a car's appearance are of vital importance. Automobile paint needs to have multiple properties such as good gloss, weather resistance and color stability. "Pigment Yellow 168" can meet these requirements, providing cars with bright and lasting colors. Whether under the illumination of sunlight or the erosion of wind and rain, it can keep the cars in a bright appearance.

Solvent-based colored baking enamel is also where it can shine. In the production process of this kind of porcelain lacquer, a high-temperature baking step is required, which puts forward very high requirements for the heat resistance of the pigment. The heat resistance of "Pigment Yellow 168" enables it to stably maintain its own color during this process and will not change due to high temperature, thus ensuring the color quality of the final porcelain lacquer product.

Powder coatings have extensive applications in the field of industrial coating and possess advantages such as environmental friendliness and high efficiency. The application of "Pigment Yellow 168" in powder coatings can provide good coloring effects for the products, making the product surface present bright and uniform colors. At the same time, it also meets the requirements of powder coatings for the heat resistance, weather resistance and other aspects of pigments.

Coil coatings are mainly used for surface coating of metal coils, such as color steel plates in the construction industry. This kind of coating needs to form a firm protective film on the metal surface and have good color performance at the same time. "Pigment Yellow 168" can well meet the requirements of coil coatings and form a coating with bright colors and good durability on the metal surface.

2. Plastic

In the field of plastics, "Pigment Yellow 168" also has extensive applications. It has excellent coloring performance in plastics and can provide bright and uniform colors for plastic products. It is especially suitable for coloring LDPE (low-density polyethylene). When it is mixed with LDPE materials, it can be well dispersed in them, making LDPE products present an ideal color effect. However, when used in HDPE (high-density polyethylene), dimensional deformation may occur. This might be due to the interaction between this pigment and HDPE, which has led to some changes in the physical properties of the material. Although this phenomenon needs to be noted in some cases, in many HDPE products where dimensional accuracy requirements are not particularly high, its coloring advantages can still be utilized. Meanwhile, in soft polyvinyl chloride, it has good migration resistance. This enables various products made of soft polyvinyl chloride, such as soft plastic films and soft plastic pipes, to maintain color stability for a long time and avoid color migration issues due to contact with other substances or external factors.

3. Others

Apart from the fields of coatings and plastics, "Pigment Yellow 168" also has a wide range of uses. In terms of ink coloring, it can provide a bright yellow tone for ink, meeting the color requirements of various printed materials. Whether it is the printing of books and magazines or packaging printing and other fields, its presence can be seen everywhere.

It also plays a certain role in fields such as medicine and chemical engineering. Although the specific application methods may vary depending on different pharmaceutical and chemical production processes, some of its chemical or physical properties may play a crucial role in the coloring of drugs, the identification of chemical products, or certain special chemical reactions.