Sri Lanka State Trading (General) Corporation
No 100 Nawam Mawatha, Colombo 02
Procurement Notice for Chemicals
Closing on 16/12/2016
Product: Potassium Nitrate Technical Grade
Usage : Pyrotechnics (Fireworks Industry) in Sri Lanka
Technical Specification
Parameter
Requirement
Units
Potassium Nitrate content
99.70% Min
% mass KNO3
Moisture
0.10% Max
% mass H2O
Water Insoluble
350 ppm Max
ppm
Chloride (Cl)
350 ppm Max
ppm
Iron (Fe)
10 ppm Max
ppm
pH (10% Solution)
6.0-10.0
* Product should be with Anticaking Agent to avoid the formation of lumps.
Sieve Analysis
On 6.5 US mesh (>3.15mm) 2%.
Through 18 US mesh (<1.00mm) 10%
Lower Limit
Upper Limit
+ 3.15 mm
-
2%
% mass
+ 1.00 mm – 3.15mm
-
10%
% mass
-1.00 mm
88%
-
% mass
Packaging
25 kg net or 50 kg net packaging with outer woven polypropylene bag and inner polyethylene
quoted or uncoated bag.
Sri Lanka State Trading (General) Corporation
No 100 Nawam Mawatha, Colombo 02
Product: Ammonium Nitrate- ANFO Grade
Usage : Suitable for the rock blasting purposes in Sri Lanka.
Technical Specification
Parameter
Requirement
Unit
Ammonium Nitrate
99.50% Min
% mass NH4NO3
Total Nitrogen Content
34.5% Min
% mass N
Moisture
0.15% Max
% mass H2O
Bulk Density
720 – 1050
Kg/m3
Fuel Oil Retention capacity
7% Min
% mass
pH at 20 0C (1:10 dilution)
4.8
* Product should be with Anticaking Agent to avoid the formation of lumps.
Sieve Analysis
Lower Limit
+ 2.36 mm
- 2.36 mm + 1.00mm
-1.00 mm
95%
-
Upper Limit
3%
% mass
-
% mass
2%
% mass
Packaging
25 kg net packaging with outer woven polypropylene bag and inner polyethylene bag.
Sri Lanka State Trading (General) Corporation
No 100 Nawam Mawatha, Colombo 02
Product: Formaldehyde-Technical grade
Usage : Suitable for the preservation of dead bodies
Technical Specification
Parameter
Requirement
Formaldehyde
40% Vol/Vol Min
% Vol HCHO
Methanol
7% wt/wt Min
% wt Methanol
Formic Acid
100 ppm Max
ppm
Water
By balance
Sp. Gravity 25 0C
1.10 to 1.105
Iron (Fe)
Less than 1 ppm
pH
4.5 – 5.0
Ash
Less than 50 ppm
*Bitrex (Denatonium Benzoate)
1 ppm Min
Units
ppm
ppm
ppm
*A special chemical BITREX (Denatoium Benzoate) 1 ppm to be added to the formaldehyde to
make the solution bitter.
Packaging
Any net weight of 25kg to 34kg IMCO tested HDPE can, with inner stopper and outer sealed
screw cap.