Chemical & Heat Resistance

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                                             Product #640

100% Solids Chemical and Heat Resistant Coating


Chemical & Heat Resistant Coating is a two component; highly cross linked Novolac, that is 100% solids.  It can be brush, roll or airless spray applied coating designed to provide cavitation, corrosion and erosion resistance to concrete, metallic and nonmetallic surfaces. PRODUCT #640 acts as an inert barrier against extremely harsh environmental factors such as low and high PH, temperature extremes, dry and fluid particulate flow and corrosive chemical attack.  Link to related and similar products.


  • FGD scrubber ducts
  • Floor coating
  • Condensers
  • Tanks and vessels
  • De-min concrete pads
  • Heat exchangers
  • Water boxes


Finish High Gloss
Color Gray
Specific Gravity 1.27
Pot Life 45 minutes � 770F
Dry Time 4 hours @ 770F
Recommended Film Thickness 30 mils/min.; 
40 mils/nominal;
45 mils/max.
Coverage Rate One gallon covers approximately 53.4 square feet at 30 mils
Flash Point Above 2000F


Compressive Strength (ASTM D-695/7 Days) 14,000 p.s.i.
Flexural Strength (ASTM D-790/7 Days) 13,000 p.s.i.
Tensile Strength (ASTM C-190/7 Days)  7,500 p.s.i.
Shear Strength (ASTM D-1002 Tensile: Steel to Steel) 2,300 p.s.i.
Operating Temperature Wet:  3000F
Dry:   4000F
PH Range 0.5-13.5


The following represents percent flexural strength retained after two weeks cure at 770F followed by 30 days immersion in the chemical environment as described.

  @770F @ 1400F
45% Nitric Acid 100% + min. 100% + min.
25% Acetic Acid 100% + min. 100% + min.
35% Hydrochloric Acid 100% + min. 100% + min.
20% Sulfuric Acid 100% + min. 100% + min.
15% Sodium Hypochlorite 100% 97%
50% Potassium Hydroxide 100% + min. 100% + min.
30% Sodium Hydroxide 100% + min. 100% + min.
50% Sodium Hydroxide 99% 97%


The following standards may be used in assessing what activities can be carried out after an application of PRODUCT #640.

Temperature 750F
Overcoating 2 to 4 hours
Movement/Light Stress 8 hours
Traffic Bearing 16 to 24 hours
Immersion/Full Chemical Exposure 5 days

Force cures may be used to either enhance chemical resistance or to allow the coating to be placed in service before 5 days. Allow a post cure of 12 to 24 hours before force curing.


  • Minimum 2 Hours @ 1500F
  • Minimum 4 Hours @ 2000F

NOTE:   This product will cure well at temperatures as low as 40 - 450F. However, additional curing time must be provided.


CONCRETE: Surface must be clean and sound. Remove all dirt, laitance, grease curing compounds and other foreign matter by sandblasting, mechanical abrasion.  If acid etching is used follow with abrasive or mechanical abrasion. Remove water and dust from all surfaces with an oil free blast, or vacuum, immediately prior to application.  STEEL: Prior to sand blasting remove all grease, dirt and other contaminants from the surface. Grind sharp edges to a minimum radius of 1/8 inch. Remove all weld splatters. Sandblast to a white metal finish according to SSPC-SP-5-63 or NACE standard TM-01-70 with a minimum anchor profile of 3 mils.


Mix ratio is two parts by volume base (�A�) to one part by volume hardener (�B�).


PRODUCT #640 can be applied by brush, roller or airless spray equipment. PRODUCT #640 is designed to be spray applied at 10 to 15 mils per coat. Relative humidity during the coating process should be a maximum of 90% for application to commence.

A minimum of two coats is recommended. If the second coat is applied before the first coat cures, no surface preparation is required. Simply apply the second coat maintaining the required mils per coat. However, if the first coat has cured (when it is tack free), the first coat must be brush blasted prior to the second coat.


Clean all equipment immediately after use with MEK or acetone.


WARNING! A Component contains epoxy resin. DANGER! B Component contains alkaline amines; strong sensitizer. May cause skin sensitization or other allergic responses. Use with good ventilation, particularly if material is heated or sprayed. Prevent all contact with skin or eyes. Wear protective clothing, goggles, gloves and/or barrier creams. Keep container closed when not in use. Wash thoroughly after handling.

FIRST AID: In case of skin contact, immediately wash with soap and water. In case of eye contact, flush eyes with copious amounts of water for at least fifteen (15) minutes. Remove contaminated clothing and shoes. If irritation persists, seek medical attention. Wash clothing before reuse.



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Proper mixing and installation is critical to the optimal success of all product.  See Installation Tips, Techdata, & MSDS for more details on our products.  Be sure to contact us with any questions and/or concerns that you have.

For more information please contact:
A Division of Epoxy Systems, Inc
20774 W. Pennsylvania Ave.
Dunnellon, Florida 34431
Over 300 products,
Since 1980
Florida & Vermont

Office Hours: 9AM-4PM Eastern Time (6AM-1PM Pacific Time).
Closed 12Noon-1PM Eastern Time for Lunch.

321-206-1833   Customer Service - Ordering and Order Status
                          Katey Fontaine, VP - Customer Service Director

714-657-3826  Technical Support
                         Norm Lambert, President - Technical Support Director 
352-489-1666   Accounting and Administration
                          Debby Lambert, CEO, and CFO

352-489-1625   Fax line to all Departments

24 hour Hazmat Emergency Telephone Response Service -1-800-633-8253

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Copyright © 1994-2009 EPOXY.COM a division of Epoxy Systems, Inc. - Florida and Vermont.  All rights reserved.

Unless other wise agreed upon in writing, buyer is responsible for the cost of shipping.

This information is presented in good faith to assist in determining whether this product is suitable for application. No warranty or representation, however, is intended or made, nor is protection from any law or patent to be inferred, and all patent rights reserved. a division of Epoxy Systems, Inc.  warrants its products (when properly stored) for the period of time as follows: Epoxies, Product #315, Product #315BC, and Product #316 one (1) year; Polyesters, Methyl Methacrylates (normal) two (2) months and Polyurethanes Four (4) months;  Power Tools and Equipment 90 days; Vinyl Esters, High Molecular Weight  Methacrylates (HMMA) and all other resins (not specifically mentioned above) 30 days; hand tools (non-power tools) 30 days. warrants that its products will be free of manufacturing defects and will be in conformity with published specifications when handled, stored, mixed and applied in accordance with recommendations of If any product fails to meet this warranty, the liability of will be limited to replacement of any non-conforming material if notice of such non-conformity is given to  within the warranty period for the material (as indicated above), or within 1 year of the delivery of materials (whichever is sooner). may in its discretion refund the price received by in lieu of replacing the material. No customer, distributor, or representative of is authorized to change or modify the published specifications of this warranty in any way. No one is authorized to make oral warranties on behalf of In order to obtain replacement or refund the customer must provide written notice containing full details of the non-conformity. reserves the right to inspect the non-conforming material prior to replacement. EXCEPT FOR THE EXPRESSED WARRANTY STATED ABOVE, THERE ARE NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR PURPOSE. 'S OBLIGATION SHALL NOT EXTEND BEYOND THE OBLIGATIONS EXPRESSLY UNDERTAKEN ABOVE AND  SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO THE PURCHASER OR ANY THIRD PARTY FOR ANY LOSS, COST, EXPENSE, DAMAGE OR LIABILITY, WHETHER DIRECT OR INDIRECT, OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. All quotes and sales subject to availability.

Many of our products are made on an individual order basis.   Unless authorized in writing by a division of Epoxy Systems, Inc. in writing before the material is made, there are no returns on items purchased from us, once the order has been processed, and the material made. In the event of authorized returns a restocking charge will be charged in the amount of 30% of the value of the material returned or $150 whichever is greater.  No returns on non-list priced items.  All Returns are for merchandise (store) credit only, no cash or credit card credits.  In the event of a return, buyer is responsible for the cost of shipping and handling in both directions.


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