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- Product Name.:Vat Blue 4
- CAS No: 81-77-6
- Weight: 442.42176
- Formula: C28H14N2O4
- Melting Point: 470-500 ºC
- Boiling Point: 740.2 ºC at 760 mmHg
- Density: 1.487 g/cm3
Hangzhou weiyi Chemical Co., Ltd ,located in Hangzhou, Zhejiang , the most dynamic area of Yangtze River Delta , China, is a professional company with dyestuff and pigments . We are committed to development, production and sales of high-tech, environmentally friendly products with high quality. Our products include disperse, reactive, acid, cationic dyestuffs and all kinds of pigments and chemical intermediates.
We have established a long-term strategic partnership depending on business honest...
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