Shelf Life: EPON Resin CS-373

 Because this resin is a one pack system containing both epoxy resin and curing agents, some resin advancement will occur during storage. For this reason, it is desirable to store this product in cool, dry conditions to minimize advancement and maximize shelf life. The recommended shelf life for this product is 52 weeks at 55°F, 20 weeks at 75°F, 4 weeks at 100°F, and 2 weeks at 120°F. For this resins system, resins advancement is indicated by an increase in the epoxide equivalent weight and solution viscosity. Excessive advancement, such as that caused by storing the product for time periods longer than recommended, can result in changes in resin processing behavior and loss of cured system performance.

 The date of certification for the product is reported on the Certificate of Analysis. Shelf life is based on the Certification Date. The manufacturing date can be determined from the Lot Number as follows:
For Products Manufactured in the 2nd half of 2007 and beyond - The first number (position 3) in the lot number sequence represent the year (1 = 2011, 2 = 2012, and so on, with 0 = 2010) The next letter in the lot number sequence represents the month (A = January, B = February, and so on, with L = December). For example - Lot Number is LL1G0001, indicates the product was manufactured in July 2011.

Our standard sales contracts typically provide a warranty by us that our products will, upon delivery to the customer at the contract delivery point(s), comply with all product specifications set out in the contract. However, once delivery has occurred, since we no longer have possession or control over the product, including its handling and storage, we cannot continue to be responsible for product quality. (Please see Warranty Disclaimer)

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The information provided herein was believed by Hexion Inc. (“Hexion”) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Hexion are subject to Hexion’s terms and conditions of sale. HEXION MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY HEXION, except that the product shall conform to Hexion’s specifications. Nothing contained herein constitutes an offer for the sale of any product.

HSL-7082 - (Rev. 01.28.09 )