Certifications/ Registrations/ Compliance Statements

Certification	Overview	Learn More
NSF/ANSI Standard 60	The 50% commercial and membrane grade Caustic Soda Solutions supplied by The Dow Chemical Company in North America are certified by NSF International NSF/ANSI Standard 60 Drinking Water Treatment Chemicals for use as corrosion & scale control and pH adjustment at a maximum level of 100mg/L. For 25% and 30% commercial grade caustic, the maximum levels are 200mg/L and 167mg/L, respectively.	View copies of the Dow NSF/ANSI Standard 60 Certificates or visit the NSF website for more information on certified manufacturing and distribution facilities.
Kosher	Caustic Soda Solution 50% is produced using common technology and inorganic raw materials. The raw material is brine (naturally occurring salt water) from salt sources. The sodium hydroxide (caustic soda solution) is produced by the electrolysis process. There are no additives, animal, plant or synthetic source, used in the process or the product. Caustic Soda Solution 50%, Commercial Grade, produced at the Plaquemine, Louisiana site and shipped directly from this facility in a tank car, has a Kosher certification letter and receives regular rabbinical inspections. Products that are obtained directly from this facility will be Kosher certified provided Kosher guidelines are followed until product reaches end user. It is important that Kosher processes are in place throughout the distribution channels to maintain Kosher status.	For the Kosher status of caustic sold through distributors, please contact the distributor directly. View a copy of the current Kosher certificate (40KB PDF) for Plaquemine site products.
Registration	Overview	Learn More
NSF International	NSF White Book Nonfood Compounds Registration Program DOW Caustic Soda Solution 50% (commercial and membrane grades) is registered with NSF International under the NSF White Book^TM Listing Program Standard for use in Nonfood Compounds for the following four categories: AX - ingredient in cleaning products; GX - ingredient in water treatment products; LX - ingredient in sewer and drain cleaners; PX - ingredient in miscellaneous products	For details of registered products, please visit the NSF Registered Proprietary Substances and Non-Food Compounds Listings Directory, and search for "Dow Chemical."
Compliance Statements
Kosher Compliance Caustic Soda Solution, 50% produced at Dow facilities, does not contain animal fats, grain, or alcohol products; therefore, it complies with Kosher dietary laws. Food Chemicals Codex (FCC) If noted on the specification, Dow Caustic Soda Solution, based on an assay concentration (as NaOH) of 48.5% - 51.5% meets the following test requirements of the Food Chemicals Codex (FCC) 4th Edition, for Sodium Hydroxide Solution. Arsenic (as As) - 1.5 mg/kg maximum Carbonate (as Na₂CO₃) - 1.5% maximum Heavy Metals (as Pb) - 0.001% maximum Lead (as Pb) - 5 mg/kg maximum Mercury - 0.5 mg/kg maximum EC Directive 2000/63/EC If noted on the specification, based on assay (as NaOH) of 48.5 - 51.5%, Dow Caustic Soda Solution meets the following test requirements of the Official Journal of the European Communities - Commission Directive 2000/63/EC. Carbonate (as Na₂ CO₃) - 0.25% maximum Arsenic (as As) - 1.5 mg/kg maximum Lead (as Pb) - 0.25 mg/kg maximum Mercury (as Hg) - 0.5 mg/kg maximum IMPORTANT NOTE: Those considering the use of Dow Caustic Soda Solution in food-related applications must carefully assess this product to determine if it is suitable for the intended application. It cannot be assumed that meeting the FCC and/or European Commission Directive 2000/63/EC test requirements set forth immediately above makes Dow Caustic Soda Solution suitable for food uses.
Standard	Overview	Learn More
ISO 9000	Each chlor-alkali location certifies its manufacturing processes to the ISO 9001:2000 standard to ensure consistent quality and high customer satisfaction.	For more information on ISO certification, see The International Organization for Standardization web site. View a copy of the current ISO 9001:2000 Certificate of Approval for Dow North America Caustic Facilities (494KB)

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