Welcome

History

User's List

Products

Inquiry Sheet

Fuel Kcal
Water Treatment

Hamada Boiler
Hamada Boiler Group Head Office
HUARONG BUILDING ROOM 1705
3880 JIANGNAN ROAD HANGZHOU CITY,
Hangzhou, Zhejiang Province, China
Tel: +86-571-87655979, 87655989
Fax: +86-571-87655969
DATA USED IN WATER CHEMISTRY | 目次 |
| Water Treatment Technology |FAQ |

The chemicals listed in this section include those found as impurities in water and also those used as treaments. The chemical formulas, ion forms, and molecular and equivalent weights are given for each substance. Abbreviations and symbols are used extensively to simplify water analysis reports and calculations. This section explains the meanings of some common symbols and what they represent in water analyses. Very often the units used in water chemistry need to be converted back and forth for practical application. For example, parts permillion may be converted to grams per 1000 litres and vice versa. The conversion factors in this section simplify this type of calculation.

CATIONS

Ion
Formula

Ionic
Weight

Equivalent Weight

Alumunium
A1+++
27.0
9.0
Ammonium
NH4+
18.0
18.0
Calcium
CA++
40.1
20.0
Hydrogen
H+
1.0
1.0
Ferrous Iron
Fe++
55.8
27.9
Magnesium
Mg++
24.3
12.2
Manganese
Mn++
54.9
27.5
Postassium
K+
39.1
39.1
Sodium
Na+
23.0
23.0
ANIONS
Bicarbonate
NCO3-
61.0
61.0
Chloride
CO3-
60.0
60.0
Fluoride
F-
19.0
19.0
Nitrate
NO3-
62.0
62.0
Hydroxide
OH-
17.0
17.0
Phosphate (tribasic)
PO4--
95.0
31.7
Phosphate (dibasic)
HPO4--
96.0
48.0
Phosphate (monobasic)
H2PO4-
97.0
97.0
Sulphate
SO4--
96.1
48.0
Sulphite
SO3--
80.1
40.0
COMPOUNDS Formula Molecular
Weight
Equivalent
Weight
Alumunium hydroxide
Al(OH)3
78.0
26.0
Alumunium sulphate
Al2(SO4)3
342.0
57.0
Alumina
Al2O3
102.0
17.0
Calcium bicarbonate
Ca(HCO3)2
162.1
81.1
Calcium carbonate
CaCO3
100.1
50.1
Calcium chloride
CaCl2
111.0
55.5
Calcium hydroxide (pure)
Ca(OH)2
74.1
37.1
Calcium hydroxide (90%)
Ca(OH)2
--
41.1
Calcium sulphate (anhydrous)
CaSO4
136.2
68.1
Calcium sulphate (gypsum)
CaSO4.2H2O
172.2
86.1
Calcium phosphate
Ca3(PO4)2
310.3
51.7
Disodium phosphate
Na2HPO4.12H2O
358.2
119.4
Disodium phosphate
(anhydrous)
NaHPO4
142.0
47.3
Ferric oxide
Fe2O3
159.6
26.6
Iron oxide (magnetic)
Fe3O4
321.4
-
Ferrous sulphate (copperas)
FeSO4.7H2O
278.0
139.0
Magnesium oxide
MgO
40.3
20.2
Magnesium bicarbonate
Mg(HCO3)2
146.3
73.2
Magnesium carbonate
MgCO3
84.3
42.2
Magnesium chloride
MgCl2
95.2
47.6
Magnesium
Mg(OH)2
58.3
29.2
Magnesium phosphate
Mg3(PO4)2
263.0
43.8
Magnesium sulphate
MgSO4
120.4
60.2
Monosodium phosphate
NaH2PO4.H2O
138.1
46.0
Monosodium phosphate
(anhydrous)
NaH2PO4
120.1
40.0
Metaphosphate
NaPO3
102.0
34.0
Sodium aluminate
Na2Al2O4
164.0
27.3
Sodium bicarbonate
NaHCO3
84.0
84.0
Sodium carbonate
Na2CO3
106.0
53.0
Sodium cholride
NaCl
58.5
58.5
Sodium hydroxide
NaOH
40.0
40.0
Sodium nitrate
NaNO3
85.0
85.0
Sodium sulphate
Na2SO4
142.0
71.0
Sodium sulphite
Na2SO3
126.1
63.0
Trisodium phosphate
Na3PO4.l2H2O
380.2
126.7
Trisodium phosphate
(anhydrous)
Na3PO4
164.0
54.7
GASES
Ammonia
NH3
17
--
Carbon Dioxide
CO2
44
--
Hydrogen
H2
2
--
Oxygen
O2
32
--
ACIDS
Carbonic
H2CO3
62.0
31.0
Hydrochloric
HCl
36.5
36.5
Phosphoric
H3PO4
98.0
32.7
Sulphuric
H2SO4
98.1
49.1

 

 
History User's List Products Inquiry Sheet
このページのトップに戻る