| Customization: | Available |
|---|---|
| CAS No.: | 115-41-3 |
| Formula: | C19h14o7s |
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Hunan Yunbang Pharmaceutical Co., Ltd. (Yunbangpharm) located in Changsha High-tech Industrial Park, Hunan. It is a high-tech enterprise specializing in the research and development, production and sales of Pharmaceutical raw materials, Pharmaceutical intermediates(API) and Fine chemicals. Based in China, Yunbangpharm has been providing suitable solutions for many domestic,foreign pharmaceutical companies and traders. Excellent quality, good reputation and authentic price have won the praise of the majority of customers.
1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
1. 90days quality guarantee for exchange.
2. For each batch order extracts, we will attach a factory Inspection Report with the goods delivery , including the BatchNo/ Date/ Test index ects; also will keep the archived extracts to ensure received by customers are the same each time.
3. Our team of experienced professionals are available online 24 hours a day to answer any questions and provide guidance on product usage and maintenance.
| Product Name: | Pyrocatechol Violet |
| CAS: | 115-41-3 |
| MF: | C19H14O7S |
| MW: | 386.38 |
| EINECS: | 204-088-3 |
| Product Categories: | bulk reagents |
| Mol File: | 115-41-3.mol |
| Melting point | 185 °C (dec.)(lit.) |
| Boiling point | 659.5±55.0 °C(Predicted) |
| density | 1.632±0.06 g/cm3(Predicted) |
| storage temp. | -20°C Freezer, Under inert atmosphere |
| solubility | H2O: 1 mg/mL, clear, red |
| pka | 7.21±0.10(Predicted) |
| form | Metallic or Crystalline Powder |
| color | Dark red-brown |
| PH Range | 6.0(YELLOW)-7.0(PURPLE)-9.0(PURPLISH RED) |
| Water Solubility | Soluble in water, ethylene glycol, monomethyl ether and ethanol. |
| BRN | 353938 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 115-41-3(CAS DataBase Reference) |
| Risk Statements | 36/37/38 |
| Safety Statements | 24/25 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 32041900 |
| Chemical Properties | greenish yellow powder |
| Uses | A complexometric indicator. |
| Uses | Pyrocatechol Violet is a complexometric indicator dye. This phthalein dye chelates metals to form blue to blue-violet complexs. It is also a pH indicator with a transition interval from 0 - 8 (red to violet). It is known to be unstable when alkaline. The stability is improved at a neutral pH. When the pH is between 2-7 the color may be yellow. Dyes and metabolites. |
| Purification Methods | It is recrystallised from glacial acetic acid. It is very hygroscopic and is an indicator standard for metal complex titrations. [Mustafin et al. Zh Anal Khim 22 1808 1967, Beilstein 19/3 V 703.] |
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