PAN Pesticides Database - Pesticide Products

Product Name on Label: Blue seal dry chlorinating shock treatment

The EPA Registered Name for this product is: Cal-chlor shock
This occurs when a single registered product is sold using many different names. For a complete list, see the Distributor Names list at the bottom of the page.

Note: See Working with the Information on this Page section below for important notes about this data.

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Identifying information, including U.S. EPA registration number, product registration status, formulation and warning label, as well as links to sources of product labels and MSDS information.
Summary of the toxicity properties of each active ingredient and the percent of each active ingredient in the product.
Approved uses for the product by general use type, pest, and crop or location.
Product registration history, including initial date registered, date cancelled (if applicable), and date registration was transferred (if applicable).
Name, address, and identifying number of the company that registered the product. Name and address of the agent, if applicable.
Complete list of names under which this product is sold. Often a company will register a single product and then sell the same product under many different brand names. The 'Distributor Name' list is a complete list of these names.

Product Identification for Cal-chlor shock

Basic Identification Information About This Product
MSDS and Product Label
U.S. EPA Product Reg No
Product Registration Status
Acute Hazard Warning Label
Restricted Use Product
PAN Bad Actor Product:
No. of names this product is sold under
Soluble concentrate
1 Danger
6 (See bottom of page for complete list of products)

Toxicity for Cal-chlor shock

Summary Toxicity Information for the Active Ingredients in this Product
For detailed chemical information click on the chemical names below

Active Ingredients
Chemical Name
Percent Carcinogen Cholinesterase
Developmental or
Reproductive Toxin
Calcium hypochlorite 65.0 % Unclassifiable No
Indicates high toxicity in the given toxicological category. Indicates no available weight-of-the-evidence assessment. For additional information on toxicity from scientific journals or registration documents, see the "Additional Resources for Toxicity " section of the chemical detail page for each active ingredient.

Other Ingredients in this Product

By U.S. law, only active ingredients (AIs) are reported. In addition to active ingredients, pesticide products may contain one or more "inert" ingredients. Many "inert" ingredients in current use have known adverse human and environmental effects.

U.S. EPA statement on inerts      U.S. EPA list of inerts     NCAP Inerts Report (pdf)


Historic Uses in the U.S. for Cal-chlor shock

Note! This product is now cancelled, when it was registered it was used for the following:


Disinfectant , Sanitizer , Fungicide , Algaecide , Microbicide/microbistat , Fungicide/fungistat , Virucide


Slime-forming bacteria , Animal pathogenic bacteria (g- and g+ vegetative) , Pseudomonas spp. , Animal pathogenic fungi , Animal viruses , Bacterial blotch of mushroom , Soft rot (erwinia) , Bacterial spot (xanthomonas) , Mold/mildew , Slime-forming fungi (paper mills/water systems) , Bacteria (unspecified) , Fungi , Algae , Fish

Crops and Locations

Pecans (postharvest application to non-stored commodity) , Pimentos (seed treatment) , Tomatoes (seed treatment) , Potatoes (postharvest application to non-stored commodity) , Sweet potatoes (postharvest application to non-stored commodity) , Mushrooms (foliar treatment) , Fish (excluding shellfish) (meat animal) , Poultry house premises (enclosed premise treatment) , Poultry feeding equipment , Poultry watering equipment , Animal living quarters , Animal feeding/watering equipment , Animal equipment , Commercial egg treatment , Beekeeping equipment , Fish pond equipment , Fish hatcheries , Marine lobster ponds (water treatment) , Oyster ponds (water treatment) , Fruit wash water , Vegetable wash water , Pulp and paper mill systems , Poultry drinking water , Swimming pool water , Swimming pool water (winterizer) , Hot tubs (outdoor) (water treatment) , Spas (outdoor) (water treatment) , Artificial sand beaches , Human drinking water , Cooling tower water , Evaporative condenser water , Ponds (ornamental) (fish) , Sewage systems , Waste water systems , Whirlpool bath water , Boat bottoms , Sugar refinery equipment , Eating est food contact surfaces , Eating est non-food contact surfaces , Hemodialysis machines , Laundry (commercial) , Laundry (household) , Toilet bowls , Environmental inanimate hard surfaces , Roofs , Hard nonporous surface

U.S. Product Registration History for Cal-chlor shock

U.S. EPA Product Reg No:
Product Registration Status:
Approval Date:
Sep 8, 1987  
Cancellation Date:
Jul 24, 1996  
Cancel/Transfer Reason:
Maint. fee non-payme

Company and Agent Information for Blue seal dry chlorinating shock treatment

Manufacturer Agent Distributor
E-z clor systems inc
109 northpark blvd., suite 406
Covington, LA 70433
Company Number: 008791
No Agent, See Company Info. Island swimming sales inc
Po box 1909
North massapequa, NY 11758
Company Number: 043937

Distributor Names for Cal-chlor shock

Product names Distributor Product Type Approval Date Cancellation Date
Blue seal dry chlorinating shock treatment E-z clor systems inc Distributor Product May 16, 1989 Jul 24, 1996
Cal-chlor shock E-z clor systems inc Parent Product Sep 8, 1987 Jul 24, 1996
Master pools cal-chlor shock E-z clor systems inc Distributor Product May 8, 1989 Jul 24, 1996
Maxi-chlor granular concentrate E-z clor systems inc Distributor Product Dec 21, 1989 Jul 24, 1996
Shock-it E-z clor systems inc Distributor Product Jul 24, 1990 Jul 24, 1996
Supra shock E-z clor systems inc Distributor Product Jul 31, 1990 Jul 24, 1996
Working with the Information on this Page

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