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Control of Industrial Major Accident Hazards (CIMAH) Report Page 6
Ranhill SAJ Sdn Bhd Revision 01
Part A: Information on the Hazardous Substances Date Aug 2019

A.1.3.1 General

Chlorine has a characteristic of penetrating and irritating odor. The gas is greenish
yellow in color and the liquid is clear amber at room temperature and atmospheric
pressure.

Sodium Silicofluoride is a white crystalline powder, odorless, acidic taste, and
hygroscopic. Hygroscopic is the marvel of drawing in and holding water atoms
through either absorption or adsorption from the surrounding environment, at normal
or room temperature.

A.1.3.2 Identification of Hazardous Substances

Name of Hazardous Chlorine Sodium Silicofluoride
Substances
CAS Registry Number 007782-50-5 16893-85-9

UN Number 1017 2674
Transport Class 2.3 6.1

Source: SDS
Table A.1.3.2: Identification of Hazardous Substances

A.1.3.3 Physical and Chemical Properties of Hazardous Substances

Properties Chlorine Sodium Silicofluoride
1 Chemical formula Cl Na 2SiF 6

2 Physical state Gas Powder (white amorphous)
3 Percentages in mixture 100 >99%

0
4 Boiling Point -34 C Not Applicable
0
5 Melting Point -101 C Decomposes at high temperature
0
6 Vapour Density at 20 C 2.49 Not Applicable
Source: SDS
Table A.1.3.3: Physical and Chemical Properties of Hazardous Substances