65997-15-1

Basic information

• Product Name: Cement, portland, chemicals
• Synonyms: Cement, portland, chemicals;PORTLANDCEMENTDUST;Portland Cement respirable dust;Portland Cement total dust
• CAS NO: 65997-15-1
• Molecular Weight: 0
• EINECS: 266-043-4
• Product Categories: UVCBs-inorganic
• Mol File: 65997-15-1.mol
• Article Data: 0

Chemical Properties

• Melting Point: 1000 °C
• Appearance: odourless fine white to grey powder
• Density: 2.7-3.2 g/cm3
• Stability: Stable. Will solidify over a period of hours if moistened or wet. Absorbs moisture from the air and solidifies over prolonged pe
• CAS DataBase Reference: Cement, portland, chemicals(CAS DataBase Reference)
• NIST Chemistry Reference: Cement, portland, chemicals(65997-15-1)
• EPA Substance Registry System: Cement, portland, chemicals(65997-15-1)

Safety Data

• Hazardous Substances Data: 65997-15-1(Hazardous Substances Data)

Usage

Description

Portland cement, also known as chemical cement, is a type of hydraulic cement that consists of tricalcium silicate (3CaO·SiO2) and dicalcium silicate (2CaO·SiO2) as its main constituents. It also contains varying amounts of alumina, tricalcium aluminate, and iron oxide, and is insoluble in water. The quartz content in most finished cements is below 1%, and chromium may be present.

Uses

Used in Construction Industry:
Portland cement is primarily used in the construction industry as a binding agent in the production of concrete. It is mixed with sand, gravel, and water at a central plant and then transported wet to the construction site. This reduces the exposure of workers to cement dust at the site. However, some construction workers may still be exposed to cement dust when small amounts are mixed on site or when cement or concrete materials are cut or ground.

Reactivity Profile

Sets in an exothermic reaction to a solid of low strength within hours after mixing with water. Continuing slower exothermic reactions harden the product to a tough gray stony mass. Incompatible with acids, acid chlorides, and acid anhydrides when set. Incompatible with ammonium salts and aluminum metal when wet and unset.

Hazard

Pulmonary function effects, asthma, respi- ratory symptoms. See concrete (1).

Health Hazard

Portland cement is an irritant of the eyes and causes dermatitis.

Safety Profile

A nuisance dust. A skin irritant. See also NUISANCE DUSTS and AEROSOLS.

Carcinogenicity

Earlier studies have suggested increases in various types of cancer, including lung and stomach, with exposure to cement, but numerous limitations prevent any conclusions in this regard.