Products Description
The substance corresponding to CAS No. 21934-68-9 is 6'-(Diethylamino)-1',3'-dimethylfluoran, also known as 3-(Diethylamino)-6,8-dimethylfluoran, 6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, with a molecular formula of C₂₆H₂₅NO₃ and a molecular weight of 399.48.
6'-(Diethylamino)-1',3'-dimethylfluoran is a white to pink powder at room temperature, with a specific molecular structure, which includes diethylamino and dimethyl groups. Its melting point is 168-170℃, boiling point is about 592.3℃ (760mmHg), flash point is 312℃, refractive index is 1.66, and logP value is 5.7176, indicating that it has strong hydrophobicity.

![CAS:21934-68-9 | 6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one CAS:21934-68-9 | 6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one](/uploads/40900/products/p20250304094352840ca.jpg?size=750x0)
Basic Info
| Product name | Heat sensitive dye 6'-(Diethylamino)-1',3'-dimethylfluoran CAS 21934-68-9 |
| CAS No. | 21934-68-9 |
|
Molecular formula |
C26H25NO3 |
| Molecular weight | 399.482 |
| Accurate quality | 399.183441 |
| PSA | 38.77000 |
| logP | 6.35 |
| Melt point | 170ºC |
| Boiling point | 592.3±50.0 °C at 760 mmHg |
| Flash point | 312.0±30.1 °C |
| Density | 1.3±0.1 g/cm3 |
Uses
6'-(Diethylamino)-1',3'-dimethylfluoran is used as a leuco dye in reversible thermochromic materials. After being compounded with color developers and fatty alcohols, it can achieve temperature-responsive color changes and is applied in the fields of anti-counterfeiting, coatings and indicator materials.
Safety Information
First aid measures: After inhalation, move the victim to fresh air, keep breathing unobstructed, rest, and seek medical attention if the victim feels unwell. In case of skin contact, immediately remove all contaminated clothing, wash the skin with water and shower, and seek medical attention if skin irritation or rash occurs.
Firefighting measures: Suitable extinguishing agents include dry powder, foam, mist water, and carbon dioxide, which may decompose and produce toxic smoke under combustion or high temperatures.
Emergency treatment of leakage: Use personal protective equipment, stay away from the leakage of the spill and be in the upwind direction. The leakage area should be enclosed with safety belts, etc., and non-related personnel should be controlled from entering to prevent entering the sewer.

Company Profile
Gnee Chem is an enterprise specialising in the research, development, production and sales of phytochemicals and fine chemicals.Our factory was established in 2016 and is located in Henan Province, covering an area of 3,600 square metres. We have a professional, well-equipped and high-quality R&D team with more than 10 years of R&D experience. Our products are widely exported to many countries, such as the United States, Russia, Canada, Australia, Europe, etc., and we provide customers with fast shipping services. We hope to establish long-term and mutually beneficial cooperation with more friends in the future, and provide the best products and services for our customers.
Contact Us
Tel: +86-372-5055135
Mob: +86-13673325456
Email: sales@gneebio.com


![6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one 6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one](/uploads/40900/products/p20250304092933b9290.jpg?size=800x0)

FAQ
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Yes, we can.
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Wire transfer, paypal, western union, money order and bitcoin.
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We usually ship within 1-3 days after receiving your payment.
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![Heat Sensitive Dye 6'-(Diethylamino)-1',3'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one CAS 21934-68-9](/uploads/40900/heat-sensitive-dye-6-diethylamino-1-36853d.jpg)





