Sodium carbonate

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					Sodium carbonate
               Disodium carbonate
               Soda Ash

Formula           Na2CO3 (CNa2O3)


Description       White to greyish crystals, powders or lumps, hygroscopic.
Uses              Baking Powder, pH Adjustment, Fungicide, Microbiocide, Herbicide

Registry Numbers and Inventories.
CAS                    497-19-8
EC Index Number        011-005-00-2
EC Class               Irritant
EC Risk Phrase         R 36
EC Safety Phrase       S 22-26
ENCS (MITI)            1-164
RTECS                  VZ4050000
                       Agricultural Chemical and Pesticide (A); Mutagen (M);
RTECS class
                       Reproductive Effector (T); Human Data (P); Primary Irritant (S)
Merck                  12,8739
Listed on the Toxic Substancs Control Act (TSCA).
Listed on Canadian Domestic Substances List (DSL).
Listed on Australian Inventory of Chemical Substances (AICS).

Formula mass                105.99
Melting point, °C           854
Boiling point, °C           1600
Density                     2.45 4 g/cm3 (18 °C)
Solubility in water         Soluble

Hazards and Protection.

                      Store in a tightly closed container. Store in a cool, dry, well-
                      ventilated area away from incompatible substances.
                      D1B - Poisonous and infections material - immediate and serious
                      effect - Toxic E - Corrosive material
                      Wash thoroughly after handling. Remove contaminated clothing and
Handling              wash before reuse. Do not get in eyes, on skin, or on clothing. Keep
                      container tightly closed. Avoid ingestion and inhalation.
                      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.
                      Follow the OSHA respirator regulations found in 29CFR 1910.134
Respirators           or European Standard EN 149. Always use a NIOSH or European
                      Standard EN 149 approved respirator when necessary.
                      Vacuum or sweep up material and place into a suitable disposal
                      container. Avoid generating dusty conditions. Provide ventilation.
Small spills/leaks
                      Cover with material such as dry soda ash or calcium carbonate and
                      place into a closed container for disposal.

Disposal code         14

                      Stable at room temperature in closed containers under normal
                      storage and handling conditions.
                      Reacts explosively with red-hot alumium metal. Incompatible with
                      ammonia + silver nitrate, 2,4-dinitrotoluene, 2,4,6-trinitrotoluene,
Incompatibilities     sulfuric acid, sodium sulfide + water, lithium, phosphorus
                      pentoxide, fluorine, and hydrogen peroxide. Hot concentrated
                      solutions of sodium carbonate are mildly corrosive to steel.

Decomposition         Carbon dioxide, toxic fumes of sodium oxide.

                       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-
Fire fighting          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.
NFPA Health            3
          Flammability 0
          Reactivity   0

          Special      -

                           Prolonged or repeated inhalation may cause nosebleeds, nasal
Exposure effects           congestion, erosion of the teeth, perforation of the nasal
                           septum, chest pain and bronchitis.
       Ingestion           May cause irritation of the digestive tract.
                           Harmful if inhaled. May cause irritation of the respiratory
       Inhalation          tract with burning pain in the nose and throat, coughing,
                           wheezing, shortness of breath and pulmonary edema.
                           Contact with skin causes irritation and possible burns,
                           especially if the skin is wet or moist.
First aid
                           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
                           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
                           Get medical aid. Flush skin with plenty of soap and water for
       Skin                at least 15 minutes while removing contaminated clothing and
                           shoes. Wash clothing before reuse.

             USCG CHRIS Code        SCE
             USCG Compatatibility   5
             Group                  Caustics

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