( I ) Elementary Physics :
An outline treatment including practical demonstration of the physical properties of chemicals carried in bulk; vapour pressure/temperature relationship. Influence of pressure on boiling temperature. Explanation of saturated vapour pressure, diffusion partial pressure,flammability limit, flashpoint and autoignition temperature. Practical significance of flashpoint and low flammable limit. Simple explanation of types of electrostatic charge generation.
( II ) Elementary Chemistry :
Chemical symbols and structures, elements of chemistry of acids and bases, structure and properties of well-known chemicals carried, chemical reaction of well-known grouping, sufficient to enable proper utilisation of  Codes.
( III ) Toxicity    :
Simple principles and explanation of basic concepts; toxicity  limits, systemic poisons and irritants . Coefficient of cubic expansion The fractional increase in volume for a 1*C rise in temperature. Chemical with stabiliser This is a chemical which has inhibitor or additive. Inhibitor Substance which inhibits any chemical reaction.
PH value      :
This used for denoting the hydrogen ion concentration in solution.   The actual PH range is 0 - 14.  PH 7 means perfect neutral.  PH 1 means more acid ( dilute hydrochloric acid ) and PH  13 means more alkali ( caustic soda solution)
Polymerisation  :
This is a phenomenon that a molecule in certain compound becomes a larger unit by involving two molecules or several tens of molecules. This new unit is called as polymerisation .Polymerisation may cause some compound to change from free liquid condition to the fluid with viscosity or to the solid condition . Abundant heat is produced in this case.Polymerization may occur automatically without any external influences. Also polymerisation may occur in the case that a compound is heated, or added by catalyse or impurities.Polymerisation may be dangerous in some circumstances.
Health hazard :
This is a substance which gives injurious or vital influence to person when skin contact inhalation and ingestion are made. However, the corrosive liquid such as acid liquid which gives vital   influence in the above cases is not specified as a toxic cargo in  this manual.
Reid vapour pressure ( R.V.P. )
The vapour pressure of a liquid determined by laboratory testing in a standard manner in the Reid Apparatus at a standard temperature of 100*F ( 37.8*C )
This pressure is, in general, denoted by pounds per square inch, absolute pressure ( R.V.P…1b)
Self reaction
In general, this is a property of the chemical substance which reacts only on polymerization or analysis itself. The self-reaction may be promoted by the mixture with a very small amount of foreign matters.
Solubility
The solubility of a substance in water, at a specified temperature, is the maximum weight of substance which will dissolve in a given weight of water, in the presence of undissolved substance.The value is usually expressed as the number of grams of substance dissolving in 100 grams of water. In the case of liquid dissolving in liquid, the term “ miscibility “ is often used instead of “ solubility “ . Ethanol dissolves in water at ordinary temperature in all proportions, and is said to be completely miscible. A hydrocarbon and water, on the other hand, are immiscible. Aniline and water are partially miscible.
Specific Gravity
This is a ratio of a substance weight at temperature t1 to the water weight at temperature t2 with the same volume as that of water. t1 need not be equal to t2.

As the temperature affects greatly the volume, the comparable temperatures are shown in the data sheet.

( Example )

S.G. = 0.982 20*C / 15*C

20*C : Substance temperature

15*C : Water temperature
Threshold Limit Value ( T.L.V. )
T.L.V. is the maximum concentration of gases, vapours, mist or spray to which it is believed that nearly all persons may be repeatedly exposed for a long period without adverse effects. However, carolled be taken for that the susceptibility of individuals will vary even though the concentration is below T.L.V. T.L.V. does not always draw a definite line between safe and dangerous concentrations.But it must be regarded that the concentration below T.L.V. is safe for persons on board against the long time exposure and the concentration over T.L.V. is dangerous for persons on board even though they are exposed only for a short time. In other words, breathing apparatus must be worn when the gas or vapour concentration is over T.L.V. or the spaces with such concentration is entered.

“Recommendation on Training and Qualifications of Officers and Crews of Ships Carrying Hazardous or Noxious Chemicals in Bulk, Annex of IMC Resolution A286 ( VIII )”