Propylene Glycol Manufacturer/High quality/Best price/In stock CAS NO.57-55-6

Details:

 

Product name	Propylene glycol
CAS number	57-55-6
Purity	99%

Usages: 

Physical property

1. Properties: Colorless viscous and stable water-absorbing liquid, almost tasteless and odorless, flammable, low toxicity.

2. Boiling point (ºC, 101.3kPa) : 187.3

3.Melting point (ºC, flow point) : -60

4. Relative density (g/mL, 20/20ºC) : 1.0381

5. Relative density (20℃, 4℃) : 1.0362

6. Refractive index (n, 20ºC) : 1.4329

7. Viscosity (mPa·s, 0ºC) : 243

8. Viscosity (mPa·s, 20ºC) : 56.0

9. Viscosity (mPa·s, 40ºC) : 18

10. Flash point (ºC, closed) : 98.9

11. Flash point (ºC, open) : 107

12. Ignition point (ºC) : 421.1

13. Combustion heat (kJ/mol, constant pressure) : 1827.5

14. Heat of combustion (kJ/mol, constant volume) : 1825.0

15. Heat of combustion (kJ/mol, 20ºC,101.3kPa) : 1853.1

16. Heat of evaporation (kJ/kg) : 538.1

17. Heat of formation (kJ/mol, 20ºC) : 500.3

18. Specific heat capacity (kJ/(kg·K), 20ºC, constant pressure) : 2.48

19. Critical temperature (ºC) : 351

20. Critical pressure (MPa) : 5.9

21. Thermal conductivity (W/(m·K)) : 0.217714

22. Lower explosive limit (%, V/V) : 2.6

23. Upper explosion limit (%, V/V) : 12.5

24. Coefficient of expansion (K-1, 20ºC) : 0.000695

25. Coefficient of bulk expansion (k-1, 55ºC) : 0.000743

26. Vapor pressure (kPa, 55ºC) : 0.19

27. Solubility: miscible with water, ethanol, ether, chloroform, acetone and other organic solvents. Although the solubility to hydrocarbons, chlorinated hydrocarbons, fats is small, but the solubility of ethylene glycol is stronger.

28. Relative density (25℃, 4℃) : 1.0328

29. Refractive index (n25) at normal temperature: 1.4314

30. Solubility parameter ((J·cm-3)1/2) : 29.516

31.van der Waals area (cm2·mol-1) : 6.960×109

32.van der Waals volume (cm3·mol-1) : 46.760

33. Gas phase standard heat of combustion (enthalpy) (kJ·mol-1) : -1902.55

34. The gas phase standard claims heat (enthalpy) (kJ·mol-1) : -421.29

35. Liquid phase standard heat of combustion (enthalpy) (kJ·mol-1) : -1838.14

36. The liquid phase standard claims heat (enthalpy) (kJ·mol-1) : -485.72

37. Liquid phase standard hot melt (J·mol-1·K-1) : 189.9 [2]

Chemical property

1. Flammable liquid. It is hygroscopic and does not corrode metal. It reacts with dibasic acid to form polyester, reacts with nitric acid to form nitric ester, and reacts with hydrochloric acid to form chlorohydrin. It is heated with dilute sulfuric acid at 170℃ to form propionaldehyde. Oxidation with nitric acid or chromic acid to produce glycolic acid, oxalic acid, acetic acid, etc. Reacts with aldehydes to form acetals. Dehydration of 1, 2-propylene glycol produces propylene oxide or polyethylene glycol.

2. Toxicity and irritants are very small and no victims have been found. LD50:7000-8000mg /kg intravenously and intraperitoneally, LD50:2800mg/kg orally. However, it has also been reported that when added to foods and drinks in high doses at one time it can cause fatal sleepiness and kidney disorders.

3. It exists in tobacco leaves and smoke. [2]

1, 2-propylene glycol is an important raw material of unsaturated polyester, epoxy resin, polyurethane resin, plasticizer, surfactant, the amount of this aspect accounts for about 45% of the total consumption of propylene glycol, this unsaturated polyester is widely used in surface coatings and reinforcement plastics. 1, 2-propylene glycol has good viscosity and hygroscopic properties, and is widely used as hygroscopic agents, antifreeze agents, lubricants and solvents in the food, pharmaceutical and cosmetic industries. In the food industry, 1, 2-propylene glycol reacts with fatty acids to form propylene glycol fatty acid ester, which is mainly used as food emulsifier. 1, 2-propylene glycol is an excellent solvent for flavoring and coloring. Due to its low toxicity, it is used as a solvent for spices and food coloring in the food industry. 1, 2-propylene glycol is often used in the pharmaceutical industry as a solvent, softener and excipient for the manufacture of various ointments and ointments, and as a solvent for mixing agents, preservatives, ointments, vitamins and penicillin in the pharmaceutical industry. Because propylene glycol has good miscibility with various spices, it is also used as a solvent and softener for cosmetics. 1, 2-propylene glycol is also used as a tobacco humidifier, anti-mold agent, food processing equipment lubricating oil and food marking ink solvent. Aqueous solution of 1, 2-propylene glycol is an effective antifreeze agent. It is also used as tobacco wetting agent, anti-mildew agent, fruit ripening preservative, antifreeze and heat carrier.

About Us:

Hebei Kunsui Technology Co., Ltd. specializes in exporting high quality Pharmaceutical raw materials, plant extract, pesticide raw materials  and Chemical raw materials.
Our products are produced on the basis of best technical team, advanced equipment, high qualified management which meet the requirements of security and environmental protection. We earned customer trust and created a good reputation during these years.

Details

kunsui chem (hangzhou) co. limited, established in 2000, dedicated to the development, production and marketing of chemicals. we are a leading manufacturer and supplier of chemicals in china.

manufacturing base: the company has some manufacturing base in zhejiang, jiangsu and shandong provide. these bases focus on production and contract manufacturing.

sales agent: dayangchem are authorized by many chinese chemical manufacturers as universal agency and international area agency. dayangchem has established very good cooperation and business relations with hundreds of chinese qualified manufacturers by long time business intercourse.

strong quality control system: strength of our ethical commitment to quality control and quality assurance systems firmly based on iso standard. qa and qc used in the whole process of raw material control, process control and finished product quality inspection.

third lab test: audit directly and tested by third party like sgs or intertek in any time will be accepted under required.

flexible payment terms: various payment terms such as l/c,d/p,d/a and t/t will be accepted. special notice: dayangchem never require customers to remit payment to a personal account. beware of being cheated.

rich experience in sales: 1000 square meters of office space with independent property rights, sales team of nearly 40 people. our customers throughout the world, especially the world-renowned companies, such as bachem, basf, celanese, corden,dow,evonik, genzyme,henkel, merck,roche,sanofi,solvay.

Packing & Shipping:

Packing&Delivery:
Packing and Storage: Packed in double plastic bags inside, outside with 25kg Fiber Drum.
Drum Size: 40cm*40cm*50mm, 25KG/drum Nt.;27.5Kg/drum.Gt. Store in a well-closed container away from moisture.
Shelf Life: 2 years if sealed and store away from direct sun light.
Storage: Stored in a clean, cool, dry area; keep away from moisture and strong, direct light/heat.
Delivery time: Around 3 workdays after your payment.
Payments:We accept BTC//USDT/Bank transfer.

Shipping Details: 
  1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker. 
  2. Shipping details & shipping documents will be provided and sent by email. 
  3. We keep tracking the shippment until clients well received. 
  4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently. 

FAQ:

Q: Is there a discount.

Yes, for larger quantity, we always support with better price.

Q2: Can I have free samples

Yes, we can supply the free 10-20g sample except high value products, but the shipping cost be paid by you. Generally USD45 for sample fee.

Q3: How do I pay the sample fee

Paypal,,T/T or just provide your courier's account number, we prefer FEDEX.

Q4: How do you treat quality complaint

If quality problem caused by us after Third Party Test, we will send you free goods for replacement or refund your payment.

Q5:What's your MOQ and lead time

Generally MOQ is 1kg, some low value products, MOQ is 25kg and lead time is within 4-5 workdays upon your payment.

Q6: Which products you can export

We are mainly exporting herbal extracts, amino acids, vitamins, cosmetics and APIs.

Q7: Which documents you can provide

Usually, we provide Commercial Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your
markets have any special requirements, let us know.