TMC-649 ENGINEERED FLUID

TMC-649 Engineered Fluid is a direct replacement for, and is miscible with 3M Novec® 649.

TMC-649 is a clear, colorless and low odor fluid designed as a replacement for ozone depleting substances (ODSs) and compounds with high global warming potentials (GWPs) such as sulfur hexafluoride (SF6) and hydrofluorocarbons (HFCs), such as HFC-134a and HFC 245fa. TMC-649 is an advanced heat transfer fluid, balancing customer needs for physical, thermal and electrical properties, with desirable environmental properties.

 

APPLICATIONS

TMC-649 is a chemically identical replacement for 3M Novec™ 649 with specific properties suitable for heat transfer applications where non-flammability and environmental concerns are important.

• Electronics Cooling (Dual Phase) 
• Computer/Data Center Cooling
• Power Electronics such as IGBTs or inverters Generators
  
• Solar Applications
• Transformers and other equipment 
• Heat Transfer

 

PHYSICAL PROPERTIES COMPARISON

Property	3M™ Novec™ 649	TMC-649
CAS #	756-13-8	756-13-8
Boiling Point	120 F°/ 49°C	120°F / 49°C
Pour Point	-162°F / -108°C	-162°F / -108°C
Specific Gravity	1.60 g/mL @ 25°C	1.60 g/mL @ 25°C
Density	1.6 g/cm3	1.6 g/cm3
Vapor Pressure	41kPa / 308 mmHg @ 25°C	41kPa / 308 mmHg @ 25°C
Critical Temperature	336°F / 169°C	336°F / 169°C
Critical Pressure	1.88mPA	1.88mPA
Pour Point	-164°F / -108°C	-164°F / -108°C
Viscosity	0.64cPs @ 25°C	0.64cPs @ 25°C
Specific Heat	1103 J/kg-K@ 25°C	1103 J/kg-K@ 25°C
Latent Heat of Vaporization @ Boil Point	88-kJ/kg	88-kJ/kg
Dielectric Constant	1.8 @ 1kHz	1.8 @ 1kHz
Dielectric Strength @ 0.1'' gap	48kV	48kV
Flash Point	None	None
Molecular Weight	g/mol	316
GWP	1	1
ODP	0	0

STABILITY

TMC-649 should be used in a sealed system to prevent interaction with water, however it is remarkably stable in its absence to over 300°C. 

 

STORAGE & HANDLING

Store at temperatures not exceeding 38°C/100°F  Store away from strong bases.  Store away from amines.  Protect from sunlight, and store in a well-ventilated place.

SHELF LIFE & STORAGE

Shelf life is 60 months from the date of manufacture when stored in the original packaging materials and stored under normal conditions. TMC will re-certify material every 5 years up to 20 years.  

 

MATERIALS COMPATIBILITY

Experiments show that TMC-649 with other materials, such as rubber, metal, has good compatibility, and little impact on a variety of materials used. Though TMC-649 with metal contact 10 days under 48 °C, no fade or damage trace is found.

Compatibility Data

Material	Compatibility	% Change in Volume	% Change in Weight
EPDM	1	-0.27	0.77
Silicon rubber	1	-2.53	-1.72
Neoprene	1	-1.36	-0.64
PTFE (Teflon 1705)	1	2.71	1.37
Nitrile	1	-0.10	1.05
HDPE	1	-0.15	-0.28
Polyamide nylon 6xt	1	/	-1.28
Polyvinylchloride (PVC)	2	-0.15	0.18
Viton	2	7.11	6.56
Polyurethane (PU)	1	0.45	0.09

Remarks:

1. “/”: the seal swells when immersed with product but becomes normal again when dried.
2. Score values: 1 – No effect; 2 – Limited affected; 3 – Severe damage 

Incompatible Materials:  Strong bases, amines, and alcohols 

 

DISPOSAL AND RECYCLING

This fluid can be recycled and reused.  Help protect the environment, and don't pay for expensive disposal services.  TMC Industries can reclaim your used fluorinated fluids, restoring them to like-new condition, and save you up to 50% in replacement fluids while protecting the environment, or TMC will recycle your fluid free of charge (conditions apply).

TMC Reclaimed Fluids are tested to meet new product specifications.  It will be clear and odorless, and a Certificate of Analysis is issued with every order.

TMC Industries offers a 100% satisfaction guarantee on all of our reclaimed fluids.  We back this up with a no questions asked refund policy.  To learn more, click HERE.