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Sodium Carbonate Toxicology

Identification and Uses :

CAS Number : 497-19-8
Molecular Formula: Na2CO3

Uses and sources of emission :

- Manufacture of soap, softening agents,
- Ceramics.

Toxicology :

This product is absorbed by the respiratory and digestive tracts.

Acute effects :

I-Ocular Contact :
Irritation of the eyes.

II-Inhalation :
Irritation of the higher respiratory tract, pulmonary irritation.

III-Ingestion :
- Irritation and corrosion of the mucous membranes of the gastro-intestinal tract,
- vomiting (may contain blood),
- diarrhoea,
- abdominal pain,
- collapse,
- death.

IV-Skin Contact :
It can cause redness, oedema.

V-Aggravation of Preexistent Medical Conditions :
The inhalation of the product can worsen preexistent respiratory problems such as asthma, emphysema and bronchitis.
Skin contact can worsen a preexistent dermatitis.

Effects on development :

A study on several animal species suggests the absence of effects on antenatal development.

Effects on reproduction :

No data concerning the effects on reproduction has been found in the consulted documentary sources.

Data on mother's milk :

No data concerning its excretion or detection in mother's milk has been found in the consulted documentary sources.

Carcinogenic effects :

No data concerning a carcinogenic effect has been found in the consulted documentary sources.

Mutagenic effects :

No data concerning a mutagenic effect has been found in the consulted documentary sources.

First aid :

I-Ocular Contact :
Rinse the eyes with water for at least 15 minutes. Seek medical help immediately.

II-Inhalation :
Bring the individual into a ventilated place and make sure he is still breathing. If there are respiratory problems, give oxygen if there is any available. If the victim does not breathe, give him artificial respiration. Call a physician.

III-Ingestion :
If the individual is conscious, make him drink water. Do not give anything by mouth to an unconscious person. Do not induce vomiting, call a doctor.

IV-Skin Contact :
Quickly withdraw contaminated clothing. It is necessary to wash skin with water and soap during 5 minutes. Seek medical help if irritation develops.

Stability :

This product is unstable under the following conditions: it absorbs humidity from air (hygroscopic). Moreover, there is formation of hydrates from contact with humidity.

Handling :

Wear ocular protection. Avoid any skin contact. Ventilate adequately, if not carry a suitable breathing apparatus.

Storage :

Store in an airtight container placed in a dry place. Do not store in a container made of aluminium or zinc.

References :
1-Occupational Medicine,Carl Zenz, last edition.
2-Clinical Environmental Health and Toxic Exposures, Sullivan & Krieger; last edition.
3-Sax's Dangerous Properties of Industrial Materials, Lewis C., last edition.
4-Toxicologie Industrielle et Intoxications Professionnelles, Lauwerys R.R. last edition.
5-Chemical Hazards of the Workplace, Proctor & Hughes, 4th edition

Health warnings on a bag of sodium carbonate (soda ash).

Health warnings on a bag of sodium carbonate (soda ash).

Causes eye irritation. Prolonged contact with skin may cause irritation.

Out Bound Links

In Bound Links

  • (Materials - General) Sodium Carbonate Decahydrate - Na2CO3.10H2O

    Washing Soda, Hydrous Sodium Carbonate

  • (Materials - General) Sodium Carbonate Heptahydrate - Na2CO3.7H2O - A source of sodium in the glass industry
  • (Materials - General) Sodium Carbonate - Na2CO3 H2O or Na2O.CO2.H2O - The most common form of sodium carbonate

    Soda Ash, Sodium Caronate Monohydrate, Na2CO3

Edouard Bastarache M.D.
Occupational & Environmental Medicine
Author of "Substitutions for Raw Ceramic Materials"
Tracy, Québec, CANADA


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