Hangzhou Lingrui Chemical Co.,Ltd.
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 8th
years
Assessed Supplier Enterprise Certification
Business Type:Other
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Enterprise Certification
Country: 
China (Mainland)
Business Type:Other
Tel: 86 571-88092529
Mobile: 18958069012
Tel: 86 571-88092529
Fax: 86 571-87334908
URL: http://www.lingruichem.com
Province/state: Zhejiang
City: Hangzhou
Street: 201-B 2# Building Qinglan science park, 321# JinPeng Str. Xihu District Hangzhou City, PR.CHINA
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CAS NO.125-20-2
Top1 supplier 125-20-2 high quality Thymolphthalein in China
Thylphenolphthalein is an acid-base indicator, colorless under acidic conditions and dark blue under alkaline conditions. Its acidic form retains hydrogen on each hydroxyl group. It is suitable for preparing invisible inks.
| Molecular Formula | C28H30O4 |
| Molar Mass | 430.54 |
| Density | 0.92g/mLat 25°C |
| Melting Point | 251-253°C(lit.) |
| Boling Point | 504.79°C (rough estimate) |
| Flash Point | 74°F |
| Water Solubility | insoluble |
| Solubility | ethanol: clarity passes test |
| Vapor Presure | 0.002Pa at 90℃ |
| Appearance | White or bright yellow crystals |
| Specific Gravity | 0.92 |
| Color | White to slightly yellow |
| Odor | Mild characteristic odor |
| Maximum wavelength(λmax) | ['592nm, 396nm, 598nm'] |
| Merck | 14,9401 |
| BRN | 359413 |
| pKa | 9.70, 10.0(at 25℃) |
| PH | 8.6～10.5 |
| Storage Condition | no restrictions. |
| Sensitive | Easily absorbing moisture |
| Explosive Limit | 3.30-19% |
| Refractive Index | 1.6400 (estimate) |
| MDL | MFCD00005909 |
| Use | Used as acid-base indicator |
Established in 2010, located in Hangzhou Qinglan science park, lingruichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals tovarious industries.n our R&D centre. we have a staff of skilled and experienced research chemists. This has enabled us to meet the special reauirements of our customers and it has enabled us to provide quality products at competitive prices.
1. How can we guarantee quality
Always a pre-production sample before mass production;
Always final Inspection before shipment;
2.What can you buy from us
Plant Extracts,Cosmetics Raw Materials,Vitamin Raw Materials,Pharmaceutical Raw Materials and Intermediates
3. Why should you buy from us not from other suppliers
Our company mainly devoted in producing pharmacetical intermediates , Vitamins , and health supplement , the quality and technical content can reach the advance level in China .Our products are sold well in China as well as in more than 20 countries.
Lingrui's credo is committed to your reliable business partner,reliable quality, competitive prices and superior service, lf you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future !