CALCIUM SULFATE HEMIHYDRATE

CALCIUM SULFATE HEMIHYDRATE - Names and Identifiers

Name	calcium sulfate hemihydrate
Synonyms	Dried gypsum dicalcium disulfate hydrate calcium sulfate hemihydrate Calcium Sulfate Hemihydrate Calcined Powder
CAS	10034-76-1
EINECS	231-900-3
InChI	InChI=1/Ca.H2O4S.H2O.2H/c;1-5(2,3)4;;;/h;(H2,1,2,3,4);1H2;;/p-2/rCaH2.H2O4S.H2O/c;1-5(2,3)4;/h1H2;(H2,1,2,3,4);1H2/p-2

CALCIUM SULFATE HEMIHYDRATE - Physico-chemical Properties

Molecular Formula	CaH2O5S
Molar Mass	154.16
Density	2.69 g/cm3
Melting Point	1193℃
Water Solubility	sets to hard mass when mixed with H2O [MER06]; g/100g solution H2O: 1.23 (0°C), 0.71 (25°C), 0.189 (100°C); solid phase, CaSO4 · 1/2H2O [KRU93]
Appearance	Form Solid, color White with a blue, gray or red hue
Storage Condition	Room Temprature
Stability	Stable. Hygroscopic.
Physical and Chemical Properties	properties white powder. solubility insoluble in water (20 ° C 0.3g/mL water), soluble in acid, ammonium salt, sodium thiosulfate and glycerol.
Use	Used for building board, also used in agriculture, etcUsed as coagulant of soybean products

CALCIUM SULFATE HEMIHYDRATE - Risk and Safety

Safety Description	S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes.
WGK Germany	1

CALCIUM SULFATE HEMIHYDRATE - Upstream Downstream Industry

Raw Materials

Calcium sulfate

CALCIUM SULFATE HEMIHYDRATE - Nature

Open Data Verified Data

white powder. Loss of 1/2H20 at 163 °c becomes anhydrous. Insoluble in water (20 ° C. 0.3g]lOOmL water), soluble in acid, ammonium salt, sodium thiosulfate and glycerol. It is mixed with water to form a plastic easily poured mortar, which is hardened into a solid stone-like body after a certain period of time, with a slight volume expansion and heat release. It is a gas-hard building gelling material. Two types of type A and Type B, type a commonly known as high-strength building gypsum, type B commonly known as plaster of Paris or gypsum.

Last Update：2024-01-02 23:10:35

CALCIUM SULFATE HEMIHYDRATE - Preparation Method

Open Data Verified Data

rotary kiln calcination method: gypsum is crushed to 1 ~ 3mm and then added to the indirect heating rotary kiln for 15 min, the final temperature of the material was 140-150 °c (115-125 °c for calcined medical gypsum). The clinker was crushed and screened to obtain calcium sulfate hemihydrate.
pressure method: the raw gypsum is crushed into 15 ~ 20mm and then added to the autoclave, cooked under pressure at a temperature of about 120 °c for about 7h, and then dried at 120~220 °c, after crushing and screening, the expanded calcium sulfate hemihydrate was obtained.

Last Update：2022-01-01 11:04:08

CALCIUM SULFATE HEMIHYDRATE - Use

Open Data Verified Data

type A is used in construction as a high-strength gypsum component, gypsum board, casting model, and as a fixing glue for machining. Type B is mainly used for building materials, plaster components, gypsum figures, ceramics, precision machinery casting mold, chalk, gelling agents and so on.

Last Update：2022-01-01 11:04:07

CALCIUM SULFATE HEMIHYDRATE - Safety

Open Data Verified Data

packed in woven bags lined with Kraft or polyethylene plastic bags, each with a net weight of 25kg. Place in a cool, dry warehouse. Moisture and rain should be prevented to avoid caking and deterioration. In case of fire, water can be used for rescue. Dust can cause respiratory diseases. The maximum allowable concentration is 2 mg/m3. Work should protect the respiratory organs, wear work clothes, wear protective glasses. Compliance with personal Protection Measure, the workplace should pay attention to dust and dust.

Last Update：2022-01-01 11:04:08

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Hefei TNJ Chemical Industry Co.,Ltd.

Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog

Shanghai Yuanye Bio-Technology Co., Ltd.

Spot supply

Product Name: Calcium Sulfate Hemihydrate Visit Supplier Webpage Request for quotation
CAS: 10034-76-1
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409

Wechat: 18301782025

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CALCIUM SULFATE HEMIHYDRATE

Raw Materials for CALCIUM SULFATE HEMIHYDRATE

Calcium sulfate

CALCIUM SULFATE HEMIHYDRATE

calcium sulfate hemihydrate

CAS: 10034-76-1

Molecular Formula: CaH2O5S

CALCIUM SULFATE HEMIHYDRATE - Names and Identifiers

CALCIUM SULFATE HEMIHYDRATE - Physico-chemical Properties

CALCIUM SULFATE HEMIHYDRATE - Risk and Safety