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Apexy LLC

Apexy LLC

Monday, 02 December 2019 01:42

Pentadecane

Technical Specification

Product Name: Apexy Pentadecane
Formula: C15H32
CAS No.: 629-62-9
Appearance ( above the 10℃ melting temperature ): Clear Colorless Liquid
Density (at 10 °C): 0.78 g/mL
Purity: 99.2~99.9 % wt.
Melting Point: 10°C
Enthalpy of Fusion: 185~195 j/g

 

Pentadecane is an alkane hydrocarbon with the chemical formula C15H32. Normal paraffin can be used as organic phase change materials and so pentadecane can be used as PCM10.Apexy pentadecane is bio renewable based normal paraffin min in 99% purity.

Applications:

  1. Cold Chain
  2. Cold Storage
  3. Coating
  4. HVAC
  5. Construction
  6. Textile
  7. Healthcare
  8. Raw materials for paraffin blend

MOQ : 12 tons packaged in steel drums or 15 tons in IBC container. 

 

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Monday, 02 December 2019 01:38

What is sensible heat?

Sensible heat is used in contrast of latent heat. It is the heat exchanged by a system in which the exchange of heat of the system. Specific heat is an important physical property of matter. The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. 

The temperature of matter is a direct measure of the motion of the molecules: The greater the motion, the higher the temperature. The relationship between heat energy and temperature change is usually expressed in the form of specific heat. Given more energy the molecules will get more energy for motion, thus the matter gets higher temperature. 

But this relationship doesn’t apply on latent heat, if a phase change is encountered the heat added or removed during this period will change the matter’s state and keep the temperature. 

Heat added= specific heat *mass*(temperature difference) 

Taking water and copper as an example, water must absorb 4,184 Joules of heat for the temperature of one kilogram of water to increase 1 degree Celsius (°C). While it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.

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Monday, 02 December 2019 01:37

What is latent heat?

To understand the concept of latent heat, we must first review phase changes. Phase changes refer to a change in matter from one state to another without changing its chemical properties. 

Water is a great example to demonstrate this phenomena, when freezing liquid water create ice, it release quite a lot energy. The released energy helps liquid water to become solid ice during the and it keeps at 0℃.Heat energy plays an important role in changing matter from one state to another. 

When thermal energy is applied on a matter, normally the temperature of the matter changes, but it stays constant during its phase change transition. The temperature remains the same because the energy is required to change the matter’s state. 

Latent heat is expressed as the amount of heat energy per mole or mass unit wanted for a phase change to occur

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Monday, 02 December 2019 01:37

What is a phase change material (PCM)?

Phase change materials ( PCM ) are substances which can absorb a large amount of latent heat energy during its physical phase change process of melting and freezing. Many materials are naturally phase change materials. So what is a PCM?  A PCM what we commonly refer is engineered phase change materials which are modified by additives for better nucleation and distribution.

Water is a famous PCM example, when it freezes, it releases quite a lot energy in the form of latent heat at a relatively constant temperature around 0°C. Conversely, the ice absorbs a large amount of heat to melt to 0°C ice water. 

PCM By type:

  • Inorganic Salt Hydrates
  • Organic phase change material ( Paraffin, Bio Wax, non-paraffin organic material )
  • Eutectics

PCM By Phase:

  • Liquid/Solid Phase change material

  • Solid/Solid Phase change material

PCM By Encapsulation:

  • Macro Encapsulated Phase change material ( plate, ball, plastic or metal containers )
  • Micro Encapsulated Phase change material ( High polymer or inorganic material wall)
  • Shape Stabilized Phase change material     ( plastic, high polymer or inorganic material as supporting materials )

PCM Application Fields:

  • Construction Materials ( Thermal Coating, energy efficient plates & boards )
  • Textile ( Thermal regulation textiles for bedding, clothing, footwear )
  • Electronics Cooling and Battery Cooling
  • Cold Chain
  • HVAC
  • Solar 
  • Heating and cooling Storage
  • Health and personal care
  • Innovative consumer products
  • Road deicing and protection
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Monday, 02 December 2019 01:34

Contact Us

General Inquiry: This email address is being protected from spambots. You need JavaScript enabled to view it.

3909 STEVENSON BLVD SUITE 704
FREMONT, CA, United States
Phone: +1 94538-2305

 

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Monday, 02 December 2019 01:33

About Us

Apexy LLC is a professional normal paraffin organic phase change material supplier who closely work with our clients, suppliers and buyers internationally to manage complex international relationships and trades. Our network of partner companies make us a competetive high purity and high quality normal paraffin PCM supplier in world market. We represent several paraffin factories and have exclusive partnership in USA market.

Apexy LLC locates in sillicon valley, USA working internationally with clients, offering a complete service in any of our specialized fields. We have strong know how on normal paraffin supply chain worldwide and our diverse and highly skilled global team and partnerships allow us to give our clients the best services and products across the globe.  

Our bio based normal paraffin Pentadecane, Hexadecane, Heptadecane, Octadecane are extracted by renewable resources which is unique in the market. With minimum 99% purity, it makes our normal paraffin ideal for applications in cold chain, cold storage, HVAC, textile, cooling vest, health care and energy efficiency construction materials. We also supply high purity petrol based tetradecane for cold chain and cold storage applications.

 

 

 

 

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Sunday, 01 December 2019 22:51

Hexadecane

Technical Specification

Product Name: Apexy Hexadecane
Formula: C16H34
CAS No.: 544-76-3
Appearance ( Above the 18℃ melting temperature ): Clear Colorless Liquid
Density (at 18 °C): 0.78 g/mL
Purity: 99.2~99.9 % wt.
Melting Point: 18°C
Enthalpy of Fusion: 230~240 J/g

 

Hexadecane is an alkane hydrocarbon with the chemical formula C16H34. Normal paraffin can be used as organic phase change materials and so hexdecane can be used as PCM18.  Apexy hexadecane is bio renewable based normal paraffin min in 99% purity.

Applications:

  1. Cold Chain
  2. Cold Storage
  3. Coating
  4. HVAC
  5. Construction
  6. Textile
  7. Cooling Vest
  8. Cooling Therapy
  9. Raw materials for paraffin blend

MOQ : 12 tons packaged in steel drums or 15 tons in IBC container. 

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Sunday, 01 December 2019 22:50

Octadecane

Technical Specification

Product Name: Apexy Octadecane
Formula: C18H38
CAS No.: 593-45-3
Appearance ( Above the 28℃ melting temperature ): Clear Colorless Liquid
Density (at 28 °C): 0.78 g/mL
Purity: 99.2~99.9 % wt.
Melting Point: 28°C
Enthalpy of Fusion: 230~240 J/g

 

Octadecane is an alkane hydrocarbon with the chemical formula C18H38. Normal paraffin can be used as organic phase change materials and so octadecane can be used as PCM28. Apexy octadecane is bio renewable based normal paraffin min in 99% purity.

Applications:

  1. Cold Chain
  2. Cold Storage
  3. Coating
  4. HVAC
  5. Construction
  6. Textile
  7. Cooling Vest
  8. Healthcare
  9. Raw materials for paraffin blend

MOQ : 12 tons packaged in steel drums or 15 tons in IBC container. 

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Sunday, 01 December 2019 22:50

Heptadecane

Technical Specification

Product Name: Apexy Heptadecane
Formula: C17H36
CAS No.: 529-78-7
Appearance ( Above the 22℃ melting temperature ): Clear Colorless Liquid
Density (at 22 °C): 0.78 g/mL
Purity: 99.2~99.9 % wt.
Melting Point: 22°C
Enthalpy of Fusion: 220~230 J/g

Heptadecane is an alkane hydrocarbon with the chemical formula C17H36. Normal paraffin can be used as organic phase change materials and so heptadecane can be used as PCM22.  Apexy heptadecane is bio renewable based normal paraffin min in 99% purity.

Application: 

  1. Cold Chain
  2. Cold Storage
  3. Coating
  4. HVAC
  5. Construction
  6. Textile
  7. Raw materials for paraffin blend

MOQ : 12 tons packaged in steel drums or 15 tons in IBC container. 

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Sunday, 01 December 2019 22:50

Tetradecane

Technical Specification

Product Name: Apexy Tetradecane
Formula: C14H30
CAS No.: 629-59-4
Appearance ( Above the 6℃ melting temperature ): Clear Colorless Liquid
Density (at 6 °C): 0.78 g/mL
Purity: 99.5~99.9 % wt.
Melting Point: 6°C
Enthalpy of Fusion: 220~230 J/g

 

Tetradecane is an alkane hydrocarbon with the chemical formula C14H30. Normal paraffin can be used as organic phase change materials and so tetradecane can be used as PCM5. Apexy tetradecane is petrol based normal paraffin min in 99% purity. 

Applications: 

  1. Cold Chain
  2. Cold Storage
  3. Road Frozen Protection
  4. Coating
  5. Raw materials for Paraffin Blend

MOQ : 12 tons packaged in steel drums or 15 tons in IBC container. 



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