MSDS

Page 4 of 7
Lead compounds: Temperatures above the melting point are likely to produce toxic metal fume, vapor, or dust; contact with strong
acid or base or presence of nascent hydrogen may generate highly toxic arsine gas.
Hazardous Polymerization: Will Not Occur
XI. TOXICOLOGICAL DATA
Routes of Entry:
Electrolyte
: Harmful by all routes of entry.
Lead compounds: Hazardous exposure can occur only when product is heated above the melting point, oxidized or otherwise
processed or damaged to create dust, vapor, or fume.
Acute Toxicity:
Inhalation LD
50
: Electrolyte: LC
50
rat: 375 mg/m
3
; LC
50
: guinea pig: 510 mg/m
3
Elemental Lead: Acute Toxicity Point Estimate = 4500 ppmV (based on lead bullion)
Oral LD
50
: Electrolyte: rat: 2140 mg/kg
Elemental lead: Acute Toxicity Estimate (ATE) = 500 mg/kg body weight (based on lead bullion)
Inhalation:
Electrolyte
: Breathing of sulfuric acid vapors or mists may cause severe respiratory irritation.
Lead compounds: Inhalation of lead dust or fumes may cause irritation of upper respiratory tract and lungs.
Ingestion:
Electrolyte
: May cause severe irritation of mouth, throat, esophagus, and stomach.
Lead compounds: Acute ingestion may cause abdominal pain, nausea, vomiting, diarrhea, and severe cramping. This may lead
rapidly to systemic toxicity.
Skin Contact:
Electrolyte
: Severe irritation, burns, and ulceration. Sulfuric acid is not readily absorbed through the skin and is not a dermal
sensitizer.
Lead compounds: Not absorbed through the skin and not a dermal sensitizer.
Eye Contact:
Electrolyte
: Severe irritation, burns, cornea damage, blindness.
Lead compounds: May cause eye irritation.
Synergistic Products:
Electrolyte:
No known synergistic products
Lead compounds: Synergistic effects have been noted with heavy metals (arsenic, cadmium, mercury), N-nitroso-N-
(hydroxyethyl)ethylamine, N-(4-fluoro-4-biphenyl)acetamide, 2-(nitrosoethylamine)ethanol, and benzo[a]pyrene.
Additional Information:
Medical Conditions Generally Aggravated by Exposure:
Overexposure to sulfuric acid mist may cause lung damage and aggravate pulmonary conditions. Contact of electrolyte (water and
sulfuric acid solution) with skin may aggravate skin diseases such as eczema and contact dermatitis. Contact of electrolyte (water
and sulfuric acid solution) with eyes may damage cornea and/or cause blindness. Lead and its compounds can aggravate some forms
of kidney, liver, and neurologic diseases.
Additional Health Data:
All heavy metals, including the hazardous ingredients in this product, are taken into the body primarily by inhalation and ingestion.
Most inhalation problems can be avoided by adequate precautions such as ventilation and respiratory protection covered in Section
VIII. Follow good personal hygiene to avoid inhalation and ingestion: wash hands, face, neck and arms thoroughly before eating,
smoking or leaving the work site. Keep contaminated clothing out of non-contaminated areas, or wear cover clothing when in such
areas. Restrict the use and presence of food, tobacco and cosmetics to non-contaminated areas. Work clothes and work equipment
used in contaminated areas must remain in designated areas and never taken home nor laundered with personal non-contaminated
clothing. This product is intended for industrial use only and should be isolated from children and their environment.
XII. ECOLOGICAL INFORMATION
Environmental Fate: lead is very persistent in soil and sediments. No data on environmental degradation. Mobility of metallic lead
between ecological compartments is slow. Bioaccumulation of lead occurs in aquatic and terrestrial animals and plants but little
bioaccumulation occurs through the food chain. Most studies include lead compounds and not elemental lead.
Environmental Toxicity: Aquatic Toxicity:
Sulfuric acid: 24-hr LC
50
, freshwater fish (Brachydanio rerio): 82 mg/L
96 hr- LOEC, freshwater fish (Cyprinus carpio): 22 mg/L
Lead: 48 hr LC
50
(modeled for aquatic invertebrates): <1 mg/L, based on lead bullion
XIII. DISPOSAL INFORMATION
US
Sulfuric Acid: Neutralize as described above for a spill, collect residue and place in a container labeled as containing