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MSDS SECTION-9
1. Chemical identity: Name, formula, synonyms, trade name, UN no. ,CAS no.,Hazchem no., ADR no. etc. 2. Physical & chemical data: appearance, state, odour,specific gravity, vapor density, boiling point, melting point, vapor pressure, solubility, pH etc.
3. Fire & explosion hazard data: flash point, fire point, auto ignition temp, flamability limits, organic peroxide, corrosive etc.
4. Reactivity data: chemical stability, incomatibility, reactivity, hazardous reaction products.
5. Health hazard data: TLV, STEL, odour threshold, routes of entry, body parts affected, effect of exposure, emergency and first aid treatment, NFPA signals etc.
6. Preventive measures: ventilation require and type, PPEs require, handling & storage precautions
7. Emergency and first aid measure: steps to be taken in case of emergency, waste disposal method for solid, liquid and gaseous waste, fire and extinguish media etc.
8. Additional information/reference:
9. Mfg./supplier’s data: name of firm, address, telephone no., contact person in case of emergency, tremcard details/reference, other information.
CLASSIFICATION OF DANGEROUS GOODS
| UN Number | ADR Number |
| Explosive | Emission of gas due to pressure or due to chemical reaction |
| Gases | Flammability of liquid and gases |
| Flammable liquids | Flammability of gases |
| Flammable solids | Oxidizing |
| Oxidizing substance | Toxicity |
| Poisonous substance | Corrosivity |
| Radioactive substance | Risk of spontaneous violent reaction |
| Corrosive Chemicals | |
| Miscellaneous |
Interpretation and use of MSDS
Formula (Chemical): it is a symbolic representation of chemical entity or relationship between elements, molecules and atoms.
Synonyms: indicates alternate name of material.
Trade name: commercial name of product.
Chemical classification: general classification of organic or in organic.
CAS No: it is a Chemical Abstract Service number
to provide a single unique identifier with naming the chemicals e.g CAS for acetic acid is 64-19-7
UN No: it is United Nations four digit number assigned to potentially hazardous materials. This numbers are internationally recognized and used by emergency response personnel to identify material during transport emergencies.UN No: it is United Nations four digit number assigned to potentially hazardous materials. This numbers are internationally recognized and used by emergency response personnel to identify material during transport emergencies.
| Name of chemicals | UN No. |
| Ammonia | 1005 |
| Carbon dioxide | 1013 |
| Chlorine | 1017 |
| Benzene | 1114 |
| Gasoline/petrol | 1203 |
EMERGENCY INFORMATION PANEL
• Under the amended Factories Act & Rules made therein by states, every motor vehicle carrying hazardous substances should comply with certain regulations. One of them is painting of HAZCHEM panel on tanker body in specific dimensions & at specified locations.
• The vehicle carrying hazardous chemical should have ‘Emergency Information Panel’ on both sides and on back. In addition, relevant UN Hazard class label has to be displayed on the front part of the vehicle.
• The Emergency Information Panel provides information in the event of an emergency. It indicates the correct technical name of the substance being transported. Its UN number, Hazchem code and UN Hazard class label. The panel also provides telephone number for contact incase of an emergency, and for special advice.
• Each term in the emergency information panel is explained as shown below
1. Left side top of rectangular panel shows correct technical name of the chemical.
2. Below technical name, UN number, Hazchem & emergency telephone number are listed one below the other respectively.
3. On right side top of the panel, a class label alongwith subsidiary risk label (if any) is shown. 4. At right bottom, related class label, specialist advice is indicated.
HAZCHEM CODE
One has to fall back on three aspects to derive the code.
1. Fire or spillage – select 1 to 4 as indicated in the table.
2. Select either ‘DILUTE’ or ‘CONTAIN’ aspect and accordingly decide respiratory protection.
3. Last aspect is on ‘EVACUATION’.
• ADR No: it is an Agreement concerning carriage of Dangerous goods by Road.
• This European agreement was arrived at Geneva by 19 European countries for the safety of international transport by road.
• It deals with the classification of hazardous substance, their packaging, loading and unloading, transportation and its equipment
• It gives hazard identification numbers like UN hazard class number.
• Specific gravity: it is the ratio of density of material to the density of water. Lighter material will float and heavier will sink.
• It is useful for spill and fire control.
• Vapor density: It is the vapor weight per unit volume. In MSDS, it is given ratio of density of a gas or vapor to the density of air.
• Boiling point: it is the temperature at which material changes from liquid to gas.
• Melting point: it is the temperature at which a solid material melts and becomes a liquid. This information is useful for storage and handling purpose.
• Freezing point: it is the temperature at which a liquid material freezes and becomes solid.
• Vapor pressure: it is the pressure upon atmosphere of vapor of material at a fixed temperature. Higher vapor pressure indicates higher concentration and therefore higher hazard to fire or inhalation.
• Solubility: ability of a material to dissolve in water or another liquid.
• Flash point: it is the lowest temperature at which a material gives off enough vapor near its surface to form a flammable air vapor mixture so that it can be ignited if spark is available.
TDG Flammability:
Transport of Dangerous Goods classifies the materials according to their flammability as under;
• 2.1 flammable gas
• 3 flammbale liquid
•4.1 flammbale solid
• 4.2 spontaneous combustible material
• 4.3 material which gives off a flammble gas on contact with water.
Chemical Hazard Information
• Chemical labels: National Fire Prevention Association (NFPA) Fire Rating
• Material Safety Data Sheets (MSDS)
• Hazard Information on the Internet
Safety and Risk Phrases:
• Regulation 9 of Chemical Hazards Information and Packaging gives requirements for the labeling of substance and preparation dangerous for supply.
• It includes name and address of supplier, information of substance, symbols and safety and risk phrases.
• These phrases are represented by number and their specific meaning indicating type of hazard in brief.
Safety Phrases
• S1 – Keep locked up
• S2 – keep out of reach of children
• S4 –keep away from living quarters
• S7- keep container tightly closed.
• S8- Keep container dry
• S9- keep container in well ventilated place.
• S22- do not breath dust
• S24- avoid contact with skin
Risk Phrases
• R1- explosive when dry
• R2- risk of explosion by shock, friction, fire or other source of ignition
• R3-extreme risk of explosion
• R4-Forms very sensitive explosive metallic compounds
• R5- heating may cause an explosion
• R6-Explosive with or without contact or air
• R7- May cause fire
