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CALCIUM SULFATE HEMIHYDRATE

CALCIUM SULFATE HEMIHYDRATE
CALCIUM SULFATE HEMIHYDRATE structure
CAS No.
13397-24-5
Chemical Name:
CALCIUM SULFATE HEMIHYDRATE
Synonyms
gips;GYPSUM;CEMENT;Gypsite;DRIERITE;DRIERITE(R);DRIERITE(TM);Phosphogypsum;CALCINED GYPSUM;CALCIUM SULPHATE
CBNumber:
CB5210697
Molecular Formula:
CaH2O5S
Formula Weight:
154.16
MOL File:
13397-24-5.mol

CALCIUM SULFATE HEMIHYDRATE Properties

Melting point:
1450 °C
Density 
2.32
form 
Irregular Granules or Chunks
color 
Blue
EPA Substance Registry System
Gypsum (13397-24-5)

Mechanical Properties

Hardness, Vickers
60
Hardness, Mohs
2.0
Hardness, Knoop
46 - 54
Drilling Hardness
8.3
SAFETY
  • Risk and Safety Statements
Hazard Codes  T,N
Risk Statements  49-42/43-51/53-68-50/53-60
Safety Statements  53-22-36/37-45-60-61
RIDADR  UN 3077 9/PG 3
WGK Germany  1
RTECS  WS6920000
3

CALCIUM SULFATE HEMIHYDRATE price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 238910 Drierite™ without indicator, 4?mesh 13397-24-5 454 g $49.3 2021-03-22 Buy
Sigma-Aldrich 238937 Drierite™ without indicator, 8?mesh 13397-24-5 454 g $49.3 2021-03-22 Buy
Sigma-Aldrich 737828 Drierite™ with indicator, 10-20?mesh 13397-24-5 454 g $59.6 2021-03-22 Buy
Sigma-Aldrich 456071 Drierite™ with indicator, 6?mesh 13397-24-5 454 g $75 2021-03-22 Buy
Sigma-Aldrich 238961 Drierite™ with indicator, 4?mesh 13397-24-5 454 g $75 2021-03-22 Buy

CALCIUM SULFATE HEMIHYDRATE Chemical Properties,Uses,Production

Uses

Anhydrous: insoluble anhydrite is used in cement formulations and as a paper filler. Soluble anhydride, because of its strong tendency to absorb moisture, is useful as a drying agent for solids, organic liquids and gases; the desiccant used in laboratory and industry is known under the name Drierite. This material can be regenerated repeatedly and reused without noticeable decrease in its desiccating efficiency. The hemihydrate is used for wall plasters; wallboard; tiles and blocks for the building industry; moldings; statuary; in the paper industry. The dihydrate is used in the manufacture of portland cement; in soil treatment to neutralize alkali carbonates and to prevent loss of volatile and dissolved nitrogenous compounds by volatilization and leaching; for the manufacture of plaster of Paris, artificial marble; as a white pigment, filler or glaze in paints, enamels, pharmaceuticals, paper, insecticide dusts, yeast manufacture, water treatment, polishing powders; in the manufacture of sulfuric acid, CaC2, (NH4)2SO4, porous polymers. Pharmaceutic aid (in plaster casts).

Definition

A powdered mixture of calcium silicates and aluminates, which is made by heating limestone (CaCO3) with clay, and grinding the result. When mixed with water, reactions occur with the water (hence the name hydraulic cement) and a hard solid aluminosilicate is formed.

Definition

calcium sulphate: A white solidcompound, CaSO4; r.d. 2.96; 1450°C.It occurs naturally as the mineralanhydrite, which has a rhombicstructure, transforming to a monoclinicform at 200°C. More commonly,it is found as the dihydrate,gypsum, CaSO4.2H2O (monoclinic;r.d. 2.32). When heated, gypsumloses water at 128°C to give thehemihydrate, 2CaSO4.2H2O, betterknown as plaster of Paris. Calciumsulphate is sparingly soluble in waterand is a cause of permanent hardnessof water. It is used in the manufacture of certain paints, ceramics,and paper. The naturally occurringforms are used in the manufacture ofsulphuric acid.

General Description

White or nearly white, odorless, crystalline solid.

Reactivity Profile

CALCIUM SULFATE HEMIHYDRATE is generally of low reactivity. Can serve as an oxidizing agent under forcing conditions. Incompatible with aluminum (at high temperatures) and diazomethane.

Agricultural Uses

Calcium sulphate (CaSO4) is a white solid that occurs naturally as a mineral anhydrite. It is found more commonly as dihydrate, called gypsum (CaSO4·2H2O). When heated, gypsum loses water at 128°C to give a hemihydrate (2CaSO4·H2O), also known as plaster of Paris.
Calcium sulphate is sparingly soluble in water and makes water permanently hard. CaSO4 is used in the manufacture of certain paints, ceramics and paper. Its naturally occurring form is used in sulphuric acid manufacture.
Gypsum is the cheapest and the most useful material in reclamation of sodic soils.Calcium, solubilized from gypsum, replaces sodium, leaving behind the watersoluble sodium sulphate, which is leached out as a result of the following reactions in the soil:
Since both reactions are reversible, adequate leaching arrangements have to be made to remove sodium sulphate.
The application of about 40 t/ha of gypsum in Nevada (USA) was seen to increase water infiltration and the depth of water penetration substantially. These two measures increased hay yield up to 2.3 t/ha per year.
Gypsum requirement (GR) is the amount of gypsum necessary to be added to reclaim soil and is calculated using the formula:
The gypsum requirement is equivalent to (Nax)×4.50 metric tons of gypsum per hectare for a 30 cm fixed depth, where Na, is the milliequivalent of exchangeable sodium to be replaced by calcium from the added gypsum.

CALCIUM SULFATE HEMIHYDRATE Preparation Products And Raw materials

Raw materials

Preparation Products


CALCIUM SULFATE HEMIHYDRATE Suppliers

Global( 58)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
HENAN BON INDUSTRIAL CO.,LTD
0371-55170695
info@hnbon.com CHINA 26742 58
career henan chemical co
13203830695 0086-371-86658258
0086-371-86658258 factory@coreychem.com CHINA 29865 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671
0551-65418697 sales@tnjchem.com CHINA 37441 58
Chemwill Asia Co.,Ltd. 86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23975 58
Hubei Jusheng Technology Co.,Ltd 18871490274 027-59599241-
027-59599241 1400878000@qq.com;1400868000@qq.com China 9841 58
Chizhou Kailong Import and Export Trade Co., Ltd. Please Email
- xg01_gj@163.com China 9550 50
Henan Huawen Chemical Co., Ltd 17550685172 0370-2070108-
QQ:2712427897 2712427897@qq.com China 8899 58
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd 17691182729 029-87576359-
02988380327 1018@dideu.com;1020@dideu.com China 9953 58

View Lastest Price from CALCIUM SULFATE HEMIHYDRATE manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-02-02 CALCIUM SULFATE HEMIHYDRATE
13397-24-5
US $1.00 / KG 1KG 98% HPLC 10 tons Career Henan Chemical Co

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