Skip Navigation

Household Products Database banner

Quick search

Advanced Search triangular bullet

Browse by category
Inside the Home
Home Maintenance
Personal Care
Arts & Crafts
Pet Care
Auto Products
Home Office
Commercial / Institutional

Browse A to Z
Products Names
Types of Products

Support pages
About the Database
Product Recalls
Contact Us
More Resources



Home Products Manufacturers Ingredients Health Effects
Product Information
Product Name: Prestone Heavy Duty Stop Leak
Form: granular
Product Category: Auto Products » sealant » Cooling System
Customer Service: 800-890-2075
Date Entered: 2012-06-12
Related Items: Products with similar usage in this database
Manufacturer: Prestone Products Corp.
Div., Honeywell International, Inc.
Address: 39 Old Ridgebury Road
City: Danbury
State: CT
Zip Code: 6811
Telephone Number: 203-830-7800
Fax Number: 203-830-7904
Toll Free Number: 800-269-0750
Date Info Verified: 2017-02-28
Related Items: Products by this manufacturer
The following information (Health Effects, Handling/Disposal, and Ingredients) is taken from the product label and/or the (Material) Safety Data Sheet, (M)SDS, prepared by the manufacturer. The National Library of Medicine does not test products nor does it evaluate information from the product label or the (M)SDS. (What is an (M)SDS?) (Complete (M)SDS for this product)
Health Effects
Enter text or highlight term...
Warnings: Light tan granules, musty odor. This material is not flammable but may burn under fire conditions. May cause mild irritation to the eyes and skin. Inhalation of dust may cause mucous membrane and respiratory irritation.
Acute Health Effects: From MSDS:

Hazards Identification

Emergency Overview

Light tan granules, musty odor. This material is not flammable but may burn under fire conditions. May cause mild irritation to the eyes and skin. Inhalation of dust may cause mucous membrane and respiratory irritation.

Potential Health Effects

Inhalation: Inhalation of dust may cause mucous membrane irritation and respiratory irritation.

Skin contact: May cause mild irritation with prolonged contact.

Eye contact: May cause mild eye irritation with excess tearing and slight reddening of the conjunctiva.

Ingestion: No evidence of adverse effects from available information.

Medical conditions aggravated by exposure: A knowledge of the available toxicology information and of the physical and chemical properties of the material suggests that overexposure is unlikely to aggravate an existing medical condition.

Chronic Health Effects: From MSDS:

This product contains a small amount of crystalline silica. Repeated inhalation of large amounts of silica dust over an extended period of time may result in a progressive, disabling disease, silicosis. Symptoms include shortness of breath, ch
Carcinogenicity: Respirable crystalline silica is listed by both NTP, ACGIH and IARC as a carcinogen. None of the other components of this product are listed as a carcinogen or suspected carcinogen by IARC, NTP, ACGIH, or OSHA.

First Aid: Inhalation: No harmful effects expected. However, If symptoms of exposure occur, remove to fresh air.

Skin contact: Remove contaminated clothing. Wash all affected and exposed areas with soap and water. If irritation or redness occurs and persists, seek medical attention.

Eye contact: Exposed eyes should be immediately flushed with copious amounts of water. If irritation, pain, swelling or tearing persist, seek medical attention.

Ingestion: No harmful effects expected.

Health Rating: 0.
Flammability Rating: 1
Reactivity Rating: 0
HMIS Rating Scale: 0 = Minimal; 1 = Slight; 2 = Moderate; 3 = Serious; 4 = Severe; 
N = No information provided by manufacturer; * = Chronic Health Hazard
MSDS Date: 2011-08-24
Handling: Avoid eye and skin contact. Wash exposed skin thoroughly after handling. Avoid prolonged inhalation of dust.

Disposal: Dispose of product in accordance with all local, state/provincial and federal regulations.

Ingredients from (M)SDS/Label
ChemicalCAS No / Unique IDPercent
Soybean oil008001-22-71.0-5.0
Fuller's earth008031-18-35.0-10.0
Soybean meal068308-36-1
(Complete (M)SDS for this product)
HHS.GOV Household Products Database Home Page National Institutes of Health National Library of Medicine Specialized Information Services National Library of Medicine