Product Name Phenolphthalein
Identification
Synonyms 2-[Bis(4-hydroxyphenyl)methyl]benzoic acid; 3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone; 3,3-Bis(4-hydroxyphenyl)phthalide
Molecular Formula C20H14O4
Molecular Weight 318.33
CAS Number 77-09-8
EINECS/ELINCS 201-004-7
Structure
Properties
Appearance white powder
Melting Point 258-263ºC
Density 1.299 g/cm3
Solubility <0.1 g/100ml
Stability stable under ordinary conditions
Specification
| Items | Specifications |
| Characteristics | A white or almost white powder, practically insoluble in water, soluble in alcohol |
| Melting Point | it melts at about 260ºC |
| Identification | A:positive
B:positive |
| Appearance Of Solution | The solution is clear and not more intensely coloured than reference solution Y7 |
| Related Substances | 0.5% max |
| Heavy Metals | 0.001% max |
| Acidity Or Alkalinity | complies |
| Chlorides | 0.01% max |
| Sulphates | 0.02% max |
| Loss On Drying | 0.5% max |
| Sulphated Ash | 0.1% max |
| Assay | 98.0-101.0%(c20h14o4) |
| Microorganism | tpc<1000cfu/g |
| y and m <100cfu/g |
| e.coli: absent |
| staphylcoccus aureus: absent |
Application
Phenolphthalein is one of the most widely used indicators. Phenolphthalein is used as a laxative to treat incomplete and infrequent bowel movement.
Phenolphthalein also is used in automotive and aviation industries.
Packaging & Shipping
1. Quality
Our products meet MSDS safe standard and we have ISO and other certificate so yan can get high quality products from our company.
2. Price
We are the company which is the joint of trade and industry so we cao provide the competitive price and high quality product.
3.Packing
Generally, the package is 25 kg.
But,we can do according to the customers' request.
4.Transport
The products can be transported by Courier, by air or by sea
5.Service
We offer specialized logistic service including export declaration,customs clearance and every detail during shipment,this makes us able to offer you one-stop service from the order to the products transported to your hand.
Company Profile
Our company provides chemical raw materials, chemical products, pharmaceutical intermediates, veterinary intermediates, dye intermediates, pigments, cosmetic raw materials, chemical reagents and PVC particles to meet your various needs.
With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements.
Consistent Quality
Our plant has strict quality control in each manufacturing process. Guaranteed.Meanwhile all the materials are tested before each shipment in our laboratory to double confirm the quality.
Most competitive pricing
Our company is committed to the production and development of titanium dioxide, we always offer the most competitive pricing to customers to help lower their cost in application.
Shortest delivery time
90% of orders are shipped within 7-10 days after receipt of the prepayment or Western union
Respond in 24 hours to inquiry, feedback or other requirements
Our experienced staff is dedicated to answer all of your inquires, feedback or other requirements in 24 hours.
We welcome you to contact us for more information and look forward to working with you
China
