Buffer Cleaner
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Sampling And Testing
A sample of boiler water should be drawn for analysis daily. The sample should always be taken from the same point after blow down, cooled and tested immediately. Fill the Boiler Water Log Form according to result. It is important that regular testing is carried out to ensure levels of treatment are correct.
Physical Properties :
Appearance :Liquid
Corrosive action :None
pH 1% solution :8.8
Flash point :None
Phosphate/pH relationship recommended to control boiler corrosion. Different forms of phosphate consume or add caustic as the phosphate shifts to the proper form. For example, addition of monosodium phosphate consumes caustic as it reacts with caustic to form disodium phosphate in the boiler water according to the following reaction:
| NaH2PO4 | + | NaOH | -> | Na2HPO4 | + | H2O |
| monosodium phosphate | sodium hydroxide | disodium phosphate | water |
Conversely, addition of trisodium phosphate adds caustic, increasing boiler water pH:
| Na3PO4 | + | H2O | -> | Na2HPO4 | + | NaOH |
| trisodium phosphate | water | disodium phosphate |
sodium hydroxide |
Sampling And Testing
A sample of boiler water should be drawn for analysis daily. The sample should always be taken from the same point after blow down, cooled and tested immediately. Fill the Boiler Water Log Form according to result. It is important that regular testing is carried out to ensure levels of treatment are correct.
Physical Properties :
Appearance :Liquid
Corrosive action :None
pH 1% solution :8.8
Flash point :None
Phosphate/pH relationship recommended to control boiler corrosion. Different forms of phosphate consume or add caustic as the phosphate shifts to the proper form. For example, addition of monosodium phosphate consumes caustic as it reacts with caustic to form disodium phosphate in the boiler water according to the following reaction:
| NaH2PO4 | + | NaOH | -> | Na2HPO4 | + | H2O |
| monosodium phosphate | sodium hydroxide | disodium phosphate | water |
Conversely, addition of trisodium phosphate adds caustic, increasing boiler water pH:
| Na3PO4 | + | H2O | -> | Na2HPO4 | + | NaOH |
| trisodium phosphate | water | disodium phosphate |
sodium hydroxide |
Testing control procedure
The presence of alkalinity in a water sample may be due to many different substances. However, for the sake of simplicity, the presence of bicarbonate, carbonate, and hydroxide ions is commonly considered as alkalinity. The points of change in colour of phenolphthalein and methyl orange indicators, which occur at pH 8.3 and pH 4.3 provide standard reference points which are almost universally used to express alkalinity.
Very high alkalinity values can be undesirable in an industrial water supply. For example, the presence of a high methyl orange alkalinity should be avoided in boiler feed water because of the resultant carbon dioxide content of the steam. Carbon dioxide usually is responsible for the corrosion of steam and return lines. High boiler water alkalinities are also undesirable because the presence of high hydroxide ion concentration is the primary cause of caustic metal embrittlement. A very high boiler alkalinity can also lead to an undesirable carryover condition. On the other hand, the alkalinity of boiler water must be sufficiently high to protect the boiler metal against acidic corrosion and to ensure precipitation of scale-forming salts. Usual treatment approaches include setting both a minimum alkalinity level and an operating range.
Hydroxide alkalinity may be determined by adding barium chloride prior to titration to precipitate the carbonate ion from solution, allowing direct titration of the hydroxide alkalinity. Measurement of hydroxide alkalinity is also used to control lime soda softeners.
In cooling water systems, alkalinity is of major importance since the total alkalinity of a water is one factor that must be considered when predicting the tendency for the water to precipitate calcium carbonate scale. Depending on the choice of chemical treatments to protect against corrosion and scale formation, the operating alkalinity and pH ranges are chosen to balance these two features.
Alkalinity Titrimetric Method (0-200 ppm)
Principle Theory
This test is based on the determination of alkalinity by titration with standard acid to the phenolphthalein color change (or to a pH of 8.3) and to the methyl orange color change (or a pH of 4.3). For determination of hydroxide alkalinity only, barium chloride is added prior to titration to precipitate the carbonate ions. Titration is then taken only to the phenolphthalein end point. A pH meter may be used instead of the indicators to determine the end points of the titration.
Boiler Water Treatment products
CHARACTERISTIC :
Basic Boiler System Schematic
Below is a summary of problems associated with the common impurities in water and solutions to each problem.
List Of Problems Caused By Impurities In Water
|
Impurity (Chemical Formula) |
Problems |
Common Chemical Treatment Methods |
|
Alkalinity (HCO3-, CO32- and CaCO3) |
Carryover of feedwater into steam, produce CO2 in steam leading to formation of carbonic acid (acid attack) |
Neutralizing amines, filming amines, combination of both, and lime-soda. |
|
Hardness (calcium and magnesium salts, CaCO3) |
Primary source of scale in heat exchange equipment |
Lime softening, phosphate, chelates and polymers |
|
Iron (Fe3+ and Fe2+) |
Causes boiler and water line deposits |
Phosphate, chelates and polymers |
|
Oxygen (O2) |
Corrosion of water lines, boiler, return lines, heat exchanger equipments, etc. (oxygen attack) |
Oxygen scavengers, filming amines and deaeration |
|
pH |
Corrosion occurs when pH drops below 8.5 |
pH can be lowered by addition of acids and increased by addition of alkalies |
|
Hydrogen Sulfide (H2S) |
Corrosion |
Chlorination |
|
Silica (SiO2) |
Scale in boilers and cooling water systems |
Lime softening |
We carry a complete line of condensate treatment chemicals. Condensate treatment chemicals are used to increase the condensate pH, thus reducing corrosion to the entire boiler steam system. The most common product is a tri-blend amine of cyclohexylamine, morpholine, and diethylaminoethanol (DEAE) neutralizing amines, although we do have standard RXSOL products or we can custom blend to your needs.
RXSOL-50-5005-DCM1 10% DEAE, 10% Cyclo, 10% Morpholine
RXSOL-50-5005-DCM2 20% DEAE, 20% Cyclo, 20% Morpholine
RXSOL-50-5005-C 20% Cyclohexylamine
RXSOL-50-5005-D 20% DEAE
RXSOL-50-5005-M 20% Morpholine
RXSOL-50-5005-C5 50% Cyclohexylamine
RXSOL-50-5005-D 50% DEAE
RXSOL-50-5005-M5 50% Morpholine
RXSOL-50-5005-CC alkaline and the vapors are irritating to eyes and lungs. Avoid contact with eyes and skin. Do not take internally. Observe safety regulations wear Goggles, PVC gloves and Apron when handling Provide ample ventilation Avoid contact with skin in case of contacts wash with cupious amount of water immediately. If eyes are splashed give immediate and prolonged irrigation with clean running water and obtain medical attention.
Not for internal use :-
If swallowed do not induce vomiting give plenty of water or milk and call a doctor immediately.
Packing. GENERAL REMARKS:-Do not store RXSOL-50-5005-CA near a heating equipment.
Specifications of Disodium EDTA
Product Name : Disodium EDTA.
Product Category : Ethylene Diamine Tetra Acetic Acid Derivatives.
CAS No. : 139-33-3 (Anhydrous); 6381-92-6 (Dihydrate).
HSN No. : 29173990.
Synonyms : Ethylenediaminetetraacetic Acid Disodium Salt, N,N'-1,2-ethanediylbis(N-(carboxymethyl)glycine) edetic acid Disodium Salt, Disodium Edetate, Metaclaw, Trilon B, Versene 220, Dissolvine, Titriplex, etc.
Molecular Formula : C10H14O8N2Na2.2H2O.
Molecular Weight : 372.2.
Appearance : White Crystalline Powder.
Solubility : Soluble In Water, Clear Solution.
Assay : 99.0% Min.
pH : 4.0 - 6.0.
Chelation Value as mg. of CaCO3 : 270.0.
Uses / Application of Disodium EDTA
Disodium EDTA is a Sequestering Agent, which is used in various Industries such as Pharmaceutical, Photography, Textile, Boiler Turbine scale removal, Agriculture. It is used for removing unwanted inorganic impurities present in the system, which helps in getting superior performance & cost saving.
| PRODUCT NAME | : | DIETHYLAMINOETHANOL |
| CAS number | : | 100-37-8 |
| UN number | : | 2686 |
| Formula | : | (C2H5)2NCH2CH2OH |
| Odour | : | |
| Solubility in water | : | COMPLETE |
| Density | : | 0.880 at 20 oC |
| Boiling point | : | 161 oC |
| Melting point | : | -70 oC |
| Viscosity | : | |
| Flashpoint | : | 60 oC |
| Explosive limits | : | |
| Vapour pressure | : | 1.9 mbar at 20 oC |
| Skin absorption/irritation | : | YES |
| TLV Country NL Year 1995 | : | 10 S ppm 50 S mg/m3 |
| Pollution category 1994 | : |
C |
Never use DEAE in an open ventilation system, its oily residue can deposit on all available surfaces and results oil residue deposition. DEAE produces an oily residue which can soften varnishes.
Physical Properties:-
| Appearance | Opaque Liquid |
| Odor | CHARACTERISTIC |
| pH (1% Solution) | 10 - 11 |
| Specific Gravity | 1.1 |
| Solubility in Water | 100 % water miscible |
We are marine chemical supplier since 1996.These Marine Chemicals include different sets of products such as Tank Cleaners, Maintenance Chemicals, Cooling Water Treatment Chemicals, Boiler Water Treatment Chemicals, Fuel Additives, etc.
Oman Chemical is leading one Largest Supplier, Manufacture a
Oman Chemical is leading one Largest Supplier, Manufacture a
