iron(2+) sulfate heptahydrate CAS NO.7782-63-0

Blue-green monoclinic crystal or granule, odorless.In dry air weathering, the surface of the moist air is oxidized to brown alkaline ferric sulfate.Become four hydrate in 56.6 ℃, 65 ℃ when a hydrate.Soluble in water, almost insoluble in ethanol.Its aqueous solution is oxidized slowly in the air when it is cold, and oxidized quickly when heated.Adding alkali or dew can accelerate its oxidation.Relative density (d15) 1.897.It's stimulating.Anhydrous ferrous sulfate is white powder, with crystal water is a light green crystal, crystal commonly known as "alum", soluble in water solution is light green.Ferrous sulfate can be used for chromatographic analytical reagents, drip analysis and determination of platinum, selenium, nitrite and nitrates.Ferrous sulfate can also be used as reducing agent, manufacturing ferrite, water purification, polymerization catalyst, photographic plate and so on.

Chinese name Don't name green vitriol Ferrous sulfate foreign names Ferrous sulfate chemical formula FeSO4 · 7 h2o molecular weight 278.02 chemical category inorganic salt control category Unregulated deposit sealing a cool and dry storage avoid light preservation CAS number 7782-63-0 PSA LogP 0.42550 82.98000

directory

1 the name

2 physical properties

3 chemical properties

4 roles and USES

5 production methods

Industrial process

The lab method

6 toxicological information

7 safety terms

8 risk terms

9 safety measures

First aid measures

Fire protection measures

Emergency treatment

Packaging and storage

10 news events

Ferrous sulfate tablets

The name of the editor

Chinese name: ferrous sulfate

English name: iron(2+)

Sulfuric acid, iron(2+) salt (1:1);Iron (II) sulfate;Sulfuric acid iron(2+) salt (1:1);Ferrous sulfate;Iron (2 +) sulfate [1].

Physical editing

Ferrous sulfate

Ferrous sulfate

Appearance and properties: pale blue-green monoclinic crystal;

Melting point (℃) : 64 (loss of three crystallization water);

Relative density (water = 1) : 1.897 (15 ℃);

Molecular formula and molecular weight: FeSO4·7H2O (278.03) FeSO4 (152);

Formula:

Solubility: soluble in water, glycerin, insoluble in ethanol.[2]

Boiling point: 330 times C at 760 mmHg

Storage conditions: low temperature, ventilated, dry, separated from food raw materials [1]

Chemical editing

It's reductive.Toxic gases are released by high thermal decomposition.In the laboratory, copper sulfate solution and iron reaction can be obtained.It is weathering in the dry air.The brown, yellow and alkaline sulphate is easily oxidized to water in humid air.The water solution is acidic (Ph value about 3.7).Heating to 70 ~ 73 ℃ lost three water molecules, lose 6 water molecules to 80 ~ 123 ℃, 156 ℃ above into a base type ferric sulfate.[3]

Role and purpose editing

Ferrous sulfate can be used to make iron salts, iron oxides, mordants, water purifiers, preservatives, disinfectants, etc.

Ferrous sulfate

Ferrous sulfate

1. Water treatment

Ferrous sulphate is used to purify water and remove phosphate from municipal and industrial wastewater to prevent eutrophication of water.

2. Reducing agent

A large amount of ferrous sulfate is used as reducing agent, mainly reducing chromate in cement.

3, medicinal

Ferrous sulfate is used to treat iron deficiency anemia;It is also used to add iron to food, and long-term overuse may cause side effects such as abdominal pain and nausea.

It can also be used as a local astringent and a blood supplement for the chronic blood loss caused by uterine fibroids.

colorant

The production of a, tannic acid iron ink and other ink will require ferrous sulfate.Ferrous sulfate is also found in wood stained mordants.

B, ferrous sulfate can be used to dye the concrete yellow rust.

C, the woodwork USES ferrous sulfate to make maple wood to dye silver color.

5, agriculture

Adjust the alkalinity of the soil, promote chlorophyll formation (also known as iron fertilizer), and prevent the yellowing disease caused by iron deficiency.It is an indispensable element for the acid flowers.Agriculture can also be used as a pesticide, can control wheat smut, apple and pear scab disease, fruit tree rot;It can also be used as fertilizer to remove moss and lichen from the trunk.

6. Analytical chemistry

Ferrous sulfate can be used as chromatographic reagent.[4]