基本情報
- CAS
10034-76-1- 標準SMILES
O.O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Ca+2].[Ca+2]- InChIKey
ZOMBKNNSYQHRCA-UHFFFAOYSA-J- 分子式
- (CaSO4)2.H2O
- 平均分子量
- 290.3 g/mol
- 単同位体質量
- 289.8392056
概要
Plaster of paris appears as white or yellowish, finely divided, odorless powder consisting mostly or entirely of calcium sulfate hemihydrate, CaSO4*1/2H2O. Forms a paste when it is mixed with water that soon hardens into a solid. Used in making casts, molds, and sculpture. Generally non-toxic.
名称と識別子
- 優先名称
- Calcium Sulfate, Hemihydrate
- IUPAC
- dicalcium;disulfate;hydrate
- 英語名
- Plaster of Paris (Ca(SO4).1/2H2O)
- 分子式
- Ca2H2O9S2
- 分子量
- 0
名称と別名
Calcium sulfate, hemihydrateRefChem:5639Calcium sulfate hemihydrate10034-76-1Plaster of parisGypsum hemihydrate26499-65-0CrystacalDensiteHemihydrate gypsumDensite (gypsum)dicalcium;disulfate;hydrate
名称をさらに表示
Fgrp58-FgrFLJ43153MGC75096Ai3-01697
Plaster of Paris (Ca(SO4).1/2H2O)Sulfuric acid, calcium salt, hydrate (2:2:1)calcium sulphate hemihydrateTA 20Plaster of Paris, total dust3RW091J48VPlaster of Paris, respirable fractionGipshalbhydrat
データベース識別子
- CAS
10034-76-1、26499-65-0- PubChem CID
- 3033839
- DTXSID
DTXSID90894798- ChEBI
CHEBI:32584- UNII
- 3RW091J48V
- EC Number
- 600-067-1、607-950-0
物性
構造計算による物性
- 極性表面積
- 178 Ų
- 水素結合供与体数
- 1
- 水素結合受容体数
- 9
- 回転可能結合数
- 0
- 重原子数
- 13
- 形式電荷
- 0
- 複雑度
- 62.2
実験および物理化学的性質
Chemical ClassesMineral Dusts -> Other Mineral Dusts
Density
2.5 (NIOSH, 2024) - Denser than water; will sink
Density (for the alpha hemihydrate): 2.76 g/cm³
2.5
2.5
Solubility
0.3 % at 77 °F (NIOSH, 2024)
Solubility in water, g/100ml at 25 °C: 0.30
(77 °F): 0.3%
Melting Point
325 °F (Loses H2O) (NIOSH, 2024)
163 °C
325 °F (loses H₂O)
325 °F (Loses H2O)
Vapor Pressure
0 mmHg (approx) (NIOSH, 2024)
0 mmHg (approx)
0 mmHg (approx)
Physical Description
Plaster of paris appears as white or yellowish, finely divided, odorless powder consisting mostly or entirely of calcium sulfate hemihydrate, CaSO4*1/2H2O. Forms a paste when it is mixed with water that soon hardens into a solid. Used in making casts, molds, and sculpture. Generally non-toxic.
Large Crystals
Dry Powder
White or yellowish, finely divided, odorless powder; [NIOSH]
FINE HYGROSCOPIC WHITE POWDER.
White or yellowish, finely divided, odorless powder.
物理化学的性質
- 融点
- 163 °C · 163 °C
- 比重(密度)
- 1.55 g/cm3 · 1.55 g/cm3
- 貯蔵温度
- -20 °C · -20°C
- EPAの化学物質情報
- Plaster of Paris (Ca(SO4).1/2H2O) (26499-65-0)
安全と法規制
GHS分類
GHS Classification
This chemical does not meet GHS hazard criteria for 100% (75 of 75) of all reports.
Not Classified
Aggregated GHS information provided per 75 reports by companies from 2 notifications to the ECHA C&L Inventory.
This chemical does not meet GHS hazard criteria for 100% (39 of 39) of all reports.
Not Classified
Aggregated GHS information provided per 39 reports by companies from 2 notifications to the ECHA C&L Inventory.
危険有害性情報
Regulatory Information
Chemical: Sulfuric acid, calcium salt (1:1), hemihydrate
Sulfuric acid, calcium salt, hydrate (2:2:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Sulfuric acid, calcium salt, hydrate (2:2:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Plaster of Paris (Ca(SO4).1/2H2O) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Plaster of Paris (Ca(SO4).1/2H2O) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Calcium sulfate hemihydrate: Does not have an individual approval but may be used under an appropriate group standard
Plaster of Paris (Ca(SO4).1/2H2O): Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.
Other Safety InformationIMAP assessments - Sulfuric acid, calcium salt (1:1), hemihydrate: Human health tier I assessment
Fire HazardsNot combustible.
Health HazardsExcerpt from NIOSH Pocket Guide for Plaster of Paris:
Hazards SummaryPlaster of Paris, manufactured from gypsum (hydrated calcium sulfate), is regulated by OSHA as a nuisance dust.
Reactive GroupNon-Redox-Active Inorganic Compounds
Reactivity Profile
PLASTER OF PARIS is non-flammable and non-combustible. Has generally low chemical reactivity but can act as an oxidizing agent under extreme conditions. Decomposes at high temperature to generate toxic oxides of sulfur. Reacts exothermically but slowly with moisture in the air or water to form gypsum CaSO4.2H2O.
Flammable LimitsNoncombustible Solid
Air and Water ReactionsNo rapid reaction with air. No rapid reaction with water.
Hazard Classes and Categories
Not Classified
Not Classified
Specific target organ toxicity - Single exposure - Category 3 (Respiratory tract irritation)
Hazardous Reactivities and IncompatibilitiesMoisture, water [Note: Hygroscopic (i.e., absorbs moisture from the air). Reacts with water to form Gypsum.]
安全と保護具
Fire FightingIn case of fire in the surroundings, use appropriate extinguishing media.
First Aid Measures
Fresh air, rest.
Rinse and then wash skin with water and soap.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth.
First Aid
Excerpt from NIOSH Pocket Guide for Plaster of Paris:
(General first aid procedures)
Safe StorageDry. Well closed.
Spillage DisposalPersonal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.
Eye PreventionWear safety spectacles.
Inhalation RiskA nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered.
Skin PreventionProtective gloves.
Ingestion PreventionDo not eat, drink, or smoke during work.
Inhalation PreventionUse local exhaust or breathing protection.
Respirator RecommendationsImportant additional information about respirator selection
Threshold Limit Values (TLV)(inhalable fraction): 10 mg/m
毒性情報
Target OrgansEyes, skin, respiratory system
Exposure Routesinhalation, ingestion, skin and/or eye contact
Signs and Symptoms
Cough.
Redness. Pain.
irritation eyes, skin, mucous membrane, respiratory system; cough
安全データ
- OEB
- B
- OEL
- TWA: 10 mg/m3 (total)
化学と産業
薬理情報
MeSH Pharmacological ClassificationMaterials used in the production of dental bases, restorations, impressions, prostheses, etc.
用途と製造
U.S. Production
2023: 58,972,905 lb
2023: 34,600 lb
Consumer UsesFiller
Industry Uses
Other
Filler
Household Products
Information on 15 consumer products that contain Calcium sulfate hemihydrate in the following categories is provided:
Information on 31 consumer products that contain Plaster of paris in the following categories is provided:
General Manufacturing Information
Primary Metal Manufacturing
Non-metallic Mineral Product Manufacturing (includes clay, glass, cement, concrete, lime, gypsum, and other non-metallic mineral product manufacturing)
応用分野
一般的な説明White or yellowish, finely divided, odorless powder consisting mostly or entirely of calcium sulfate hemihydrate, CaSO4·1/2H2O. Forms a paste when Plaster of Paris (Ca(SO4).1/2H2O) is mixed with water that soon hardens into a solid. Used in making casts, molds, and sculpture. Generally non-toxic.
サプライヤー8 社
上海润裕生物科技有限公司15221425291 · [email protected]
上海优宁维生物科技股份有限公司15921930842 15921930842 · [email protected]
上海双赢生物科技有限公司31662648 15800465385 · [email protected]
上海心语生物科技有限公司13301728348 · [email protected]
珠海安哲生物科技有限公司13169972583 · [email protected]
上海博湖生物科技有限公司57763112 18930344717 · [email protected]
河南天孚化工有限公司+86-0371-55170693 +86-19937530512 · [email protected]
陕西缔都医药有限责任公司81148925 17391631969 · [email protected]
関連反応
33 件
化合物ノート
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