It's the same mild acid that's in "aluminum jelly" for cleanig corroded aluminum doors, pots, pans, etc...here's the MSDS on Aluminum Jelly btw...contains phosphoric acis & Xanthan gum too...
Warning from
Product Label: LABEL: Eye and skin irritation. Harmful if swallowed. Contains phosphoric acid. Avoid contact with skin and eyes. Wear rubber gloves when using. Use in a well ventilated area. Keep out of reach of children. This product contains a chemical known to the State of California to cause cancer.
Acute Health Effects: From MSDS:
Toxicity: Skin, eye, and inhalation irritant. TOX1C by ingestion.
Primary Routes of Entry: Acids and alcohol: Inhalation, ingestion, contact.
Signs and Symptoms of Exposure: May be injurious to eyes, skin, mucous membranes, and lungs.
Existing Conditions Aggravated by Exposure: Respiratory disorders.
Chronic Health Effects: MSDS: No information provided.
Carcinogenicity: MSDS: None of the components of this product are listed as carcinogens by NTP, IARC, or OSHA.
First Aid: MSDS: First Aid Measures:
Ingestion: Do not induce vomiting. Keep individual calm. Obtain medical attention.
Inhalation: Remove to fresh air. Keep individual calm. Obtain medical attention.
Skin Contact: Flush thoroughly with large quantities of water. Obtain medical attention.
Eye Contact: Flush with water for at least 15 minutes. Obtain medical attention.
Health Rating: 3
Flammability Rating: 0
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: 2000-06-27