Thermal Color Changing Thermo Chromic Powder for Coating Paint

Pink to Colorless Thermo chromic Powder - thermochromic pigment

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Brand:
iSuoChem
Item No.:
Pink
Color:
Pink to colorless
Appearance:
Powder
MOQ:
1 KG
Price:
From $0.198/G

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specification

Thermochromic Pigment

Product Information – 31°C Pink Reversible Thermochromic Pigment

Product Name: 31°C Pink Reversible Thermochromic Pigment
Product Type: Thermochromic Pigment Powder
Temperature Grade: 31°C
Color: Pink
Color Change Type: Reversible
Storage Conditions: Sealed packaging; store in cool and dry conditions
Ocean Transportation: Freezing container preferred
Package: 5 kg/bag, 10 kg/carton

Product Detail of Pink Thermochromic Pigment

pink to colorless thermochromic pigment

Technical Specifications of 31°C Pink Thermochromic Pigment Powder

Chemical Composition

Component	CAS Number	Concentration
Melamine	—	20–60%
Amino Resin	9003-08-1	5–10%
Polyhydric Alcohol	—	0–5%
Monohydric Alcohol	—	5–15%
Color Developing Agent	—	5–10%
Color Former	—	5–10%
Temperature Control Factor	—	0–7%
Antioxidant	3806-34-6	0–7%
Light Amine Lozenge	—	0–10%
Surface Treatment Agent for Powder	—	0–5%

Physical and Chemical Properties

Property	Specification
Appearance	Light pink powder
Particle Size	1–10 μm
Water Solubility	Insoluble
Specific Gravity	0.5–0.7
Maximum Short-Term Temperature Resistance	Approx. 200–230°C (less than 10 minutes)
Minimum Ignition Temperature	>230°C
Minimum Explosive Concentration	20–70 g/m³
Odor	Basically odorless

Features of 31°C Pink Thermochromic Pigment Powder

Reversible Temperature-Responsive Color Change
Repeatable Color-Changing Effect
Fast Color-Change Response
Temperature-Sensitive Microencapsulated Structure
Fresh and Vivid Color Appearance
Good Solvent Resistance
Good Dispersion

Thermochromic Pigment ColorCard(Color to Colorless Series)

thermochromic paint pigment

Main Function: iSuoChem® 31°C pink thermochromic pigment powder is a temperature-sensitive, microencapsulated pigment that produces a reversible color-changing effect. As the temperature rises through its activation range, the pink color gradually fades to light pink and may eventually appear nearly colorless or semi-transparent. This creates the visual impression of the color disappearing. When the temperature decreases, the pink color returns, allowing the color-changing effect to be repeated.

Recommended Applications for 31°C Pink Thermochromic Pigment Powder

Paint & Coatings	iSuoChem® 31°C pink thermochromic pigment powder can be used in thermochromic paint and surface coating applications. The TDS lists coatings for plastic products, including ABS, PE, PP, PS, PVC and EVA, making this heat-sensitive color-changing pigment suitable for the listed plastic surface coating applications.
Printing Ink	This reversible thermochromic pigment can be used in thermochromic ink formulations for screen printing, gravure printing and letterpress printing. The TDS lists printable substrates including paper, synthetic film, glass and wood.
Plastics	Thermochromic pigment powder can be incorporated into concentrated masterbatch formulations for plastic processing. The TDS lists PE, PP, PS, PVC, EVA, PET and Nylon for injection molding or extrusion applications.
Textiles & Leather	The 31°C pink thermochromic pigment is also listed for textile-related applications, including yarn, fabric and leather materials.
Ceramics & Decoration	This temperature-sensitive color-changing pigment is additionally listed for ceramic and decorative applications, providing further options for thermochromic product development.

Why Does 31°C Thermochromic Paint Change Color at Different Ambient Temperatures?

The color-changing behavior of 31°C thermochromic paint depends on the temperature within the pigment-containing coating, which may differ from the surrounding air. This distinction matters when evaluating performance under actual operating conditions.

Direct sunlight may warm a coating into its color-changing range while ambient air remains below 31°C. Conversely, a cooler substrate can delay fading even when the air is warmer. Heat transfer, substrate properties and environmental conditions all influence the coating's actual temperature.[1]

31c-thermochromic-paint-ambient-vs-surface-temperature

The nominal 31°C activation temperature is not an exact on/off point. Reversible leuco dye-based thermochromic pigments change color over a temperature interval, while thermal hysteresis may cause fading and recovery to follow different paths. Consequently, color intensity at a given temperature can depend on whether the coating is heating or cooling.[2]

For coating manufacturers, pigment selection should consider substrate material, coating structure and operating conditions. Applications requiring a narrowly defined color-change threshold should be evaluated using the finished coating rather than relying solely on the pigment's nominal activation temperature.