Zinc carbonate

3486-35-9

As pigment in manufacture of porcelains, pottery, rubber,
astringent; tropical antiseptic; cosmetics; and lotions.

White crystalline powder. 
Will sink.

125.39

Nonflammable.

Will emit carbon dioxide and zinc oxide in fires.

Evolves carbon dioxide at 300 °C.

Practically insoluble in water, 10 ppm at 15 °C.

Persistent (Sax 1986).

Food chain contamination potential moderate. 
Zinc will
accumulate in some organisms, but is not considered to be
bioconcentrative (Sax 1986).

When heated, evolves zinc oxide fumes which can cause a disease
known as brass founders ague or brass chills. 
Ingestion of zinc
salts leads to an emetic reaction (Sax 1986).

Eye, skin, respiratory, and mucous membrane irritant (Sax 1986).

Skin contamination may produce irritation, rash, and reddening. 
Contamination of mucous membranes produces reddening and
irritation. 
Exposure of eye may produce pain, photophobia and
corneal damage. 
Inhalation may produce coughing and choking
(Sax 1986).

Zinc salts are astringent, corrosive to the skin, irritating to
the gastrointestinal tract, and may act as emetics, where the
emetic concentration in water may be between 675 and 2280 ppm. 
After large doses have been ingested, fatal collapse may occur as
a result of serious damage to the buccal and gastroenteric
mucous membranes. 
The zinc ion is too poorly absorbed to induce
acute systemic intoxication. -  
When in fires or highly heated,
zinc oxides are emitted which may act as a skin irritant and
when inhaled give symptoms af metal-fume fever (Sax 1986).

Chronic hazard level: Generally, zinc compounds have no
cumulative effects. 
The continued administration of zinc salts
in small doses has no effect in man except those of disordered
digestion and constipation (Sax 1986).

Little effect on water treatment process since a level af 10
mg/l is required for an effect (Sax 1986).

Salmo gairdneri, 0.0793 mg/g, 280 d, change in length and/or
weight (Satoh et al. 1987b).

Taste threshold, lower: 6 ppm; medium: 27.2 ppm (Sax 1986).