Product Identification

Product Name

Sodium carbonate

Synonyms

Disodium carbonate
Soda Ash
Trona

CAS

497-19-8

Formula

CNa2O3

Molecular Weight

105.99

EINECS

207-838-8

RTECS

VZ4050000

RTECS Class

Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector; Human Data; Primary Irritant

Merck

12,8739

Beilstein/Gmelin

23964 (G)

EC Index Number

011-005-00-2

EC Class

Irritant

Physical and Chemical Properties

Appearance

White to greyish crystals, powders or lumps, hygroscopic.

Solubility in water

365 g/L (20 C)

Melting Point

854

Boiling Point

1600

Density

2.45 4 g/cm3 (18 C)

pKa/pKb

(1) 6.37, (2) 10.25 (carbonic (at 25℃) (pKa)

Usage

Baking powder, ph adjustment, fungicide, microbiocide, herbicide.

Refractive Index

1.495

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Harmful if inhaled. May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.

Skin

Contact with skin causes irritation and possible burns, especially if the skin is wet or moist.

Eyes

May result in corneal injury. Contact with eyes may cause severe irritation, and possible eye burns.

Ingestion

May cause irritation of the digestive tract.

EC Risk Phrase

R 36

EC Safety Phrase

S 22 26

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Prolonged or repeated inhalation may cause nosebleeds, nasal congestion, erosion of the teeth, perforation of the nasal septum, chest pain and bronchitis.

Poison Class

5

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Material will not burn. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. In case of fire use water fog, dry chemical, carbon dioxide or alcohol type foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Provide ventilation. Cover with material such as dry soda ash or calcium carbonate and place into a closed container for disposal.

Stability and Reactivity

Disposal Code

14

Incompatibilities

Reacts explosively with red-hot alumium metal. Incompatible with ammonia + silver nitrate, 2,4-dinitrotoluene, 2,4,6-trinitrotoluene, sulfuric acid, sodium sulfide + water, lithium, phosphorus pentoxide, fluorine, and hydrogen peroxide. Hot concentrated solutions of sodium carbonate are mildly corrosive to steel.

Stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Decomposition

Carbon dioxide, toxic fumes of sodium oxide.

Transport Information

HS Code

2836 20 00