MATERIAL SAFETY DATA SHEET

MONOSODIUM CHLORIDE

PRODUCT: Monosodium Chloride

SYNONYMS: Sodium Monochloride

CHEMICAL FORMULA: NaCl

CHEMICAL ABSTRACT NUMBER: 7647-14-5

PRODUCT CODE NO.: 17529

COMPOSITION

100 % maximum monosodium chloride

TLV HAZARD

Monosodium chloride

Not available (as dust, it is recommended to keep below 10 mg/m³)

INHALATION: May irritate the mucous membranes. Remove to fresh air. Inhalation of aerosols may cause pulmonary oedema. Get medical attention for any breathing difficulty.

INGESTION: Excessive quantities may cause nausea, vomiting and central nervous system depression. Regular ingestion of small quantities may cause hypertension resulting in cardiovascular disease and possibly death. Give 1 - 2 large glasses of water or milk. Induce vomiting. Immediately seek medical aid. Never give liquids to an unconscious person.

SKIN CONTACT: Sensitive persons exposed to even weak solutions may display irritation accompanied by erythema. If contact does occur, the affected area should be washed with soap and water. Get medical advice if irritation develops. Prolonged contact will cause dermal absorption to occur, producing symptoms similar to ingestion.

EYE CONTACT: Weak solutions will cause a stinging sensation. Above about 5% solutions will cause osmotic reduction of the water in the vitreous humour, temporarily shrinking the eyeball and causing focussing difficulties. Wash thoroughly with running water. Get medical advice if irritation develops.

EFFECTS OF OVEREXPOSURE: Inhalation of dust may cause mild irritation to mucous membranes, nose and throat. Symptoms may include coughing, dryness, and sore throat. Ingestion: very large doses can cause vomiting, diarrhea, and prostration. Dehydration and congestion occur in most internal organs. Hypertonic solutions can produce violent inflammatory reactions in the gastrointestinal tract.

OTHER HEALTH INFORMATION:

The acute toxicity by ingestion is 990 mg/kg (LD₅₀, 3 days, humans), 3000 mg/kg (LD₅₀, 1 day, rats)

MELTING POINT: 801°C (1474°F)

BOILING POINT: 1412°C (2575°F)

VAPOUR PRESSURE: 1.0 mm Hg at 865°C

VAPOUR DENSITY (AIR=1): N/A

SOLUBILITY IN WATER: 360 g/l at 20°C

APPEARANCE & ODOUR: White crystals. Odourless.

SPECIFIC GRAVITY (H₂O=1): 2.16

Section V - FIRE AND EXPLOSION HAZARDS

FLASH POINT & METHODS USED: none, considered non-flammable

FLAMMABLE LIMITS IN AIR; % BY VOL. LOWER: none

FLAMMABLE LIMITS IN AIR; % BY VOL. UPPER: none

SPECIAL FIRE FIGHTING PROCEDURES & PRECAUTIONS: Use any means suitable for extinguishing surrounding fire. In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode. Ensure all electricity supplies are cut. Fight fire from upwind side. Avoid run-off. Keep non-essential personnel away from immediate fire area and out of any fall-out or run-off areas.

UNUSUAL FIRE & EXPLOSION HAZARDS: When heated to above 801°C (1474°F) it emits toxic fumes of chlorine and sodium oxide in the presence of an electric field. Solutions may emit chlorine, hydrogen and oxygen in the presence of an electric field.

STABILITY: stable. Will absorb atmospheric dihydrogen monoxide if exposed.

HAZARDOUS POLYMERISATION: will not occur

CONDITIONS & MATERIALS TO AVOID: Lithium, bromine trifluoride. Most common metals, including stainless steel, will corrode in the presence of it, especially under humid conditions. Avoid electric fields.

HAZARDOUS DECOMPOSITION PRODUCTS: Solutions may emit chlorine, hydrogen and oxygen in the presence of an electric field. When heated to decomposition (above 1413°C) may emit toxic fumes of Na₂O and Cl₂

CONTROL MEASURES:.

RESPIRATORY PROTECTION: Use with adequate ventilation. NIOSH dust respirator may be worn.

PROTECTIVE CLOTHING: Wear gloves and protective clothing when using this product.

EYE PROTECTION: Wear eye protection when handling this product. Have eye wash station available.

ENVIRONMENTAL PRECAUTIONS: Ensure that any leaks or spills are cleaned up.

SPILL OR LEAK PRECAUTIONS: Steps to be taken in case material is released: In case of release to the environment, report spills to the National Response Center 1-800-424-8802.

SUGGESTED LOCAL ACTION: Contain spill. Prevent large quantities from contacting vegetation or domestic and natural water sources. If material is not contaminated place in appropriate containers for disposal.

WASTE DISPOSAL METHOD: (EPA Waste identification #: N/A) If contaminated with other materials, the nature and extent of contamination may require the use of specialised disposal methods. If disposal is necessary, comply with all local, state, and federal regulations. Contact your local EPA office for help. For Hazardous Waste Regulation: call 1-800-424-9346 - The RCRA Hotline.

WASTE DISPOSAL: Seek the advice of a professional disposal service. Ensure disposal method complies with local, provincial and federal regulations governing disposal.

DEPT. OF TRANSPORTATION: Not regulated under the Transport of Dangerous Goods Act.

IATA: Special IATA labels required

WHMIS CLASSIFICATION: none

OTHER REGULATORY REQUIREMENT: none

Store in a cool dry place away from direct light in a tightly closed container. . Do not wear contact lenses when working with chemicals.

PREPARED BY: BNE     DATE: Update 13 February 2003