Talcum Powder

Chemical Properties

Melting point	800 °C
Density	2.7-2.8
vapor pressure	0Pa at 25℃
storage temp.	Sealed in dry,Room Temperature
solubility	Practically insoluble in water, in ethanol (96 per cent) and in dilute solutions of acids and alkali hydroxides.
form	Powder/Solid
color	White to pale gray
Odor	at 100.00%. odorless
Water Solubility	Insoluble in water, cold acids, alkalies.
Thermal Conductivity	2.971 W/(m·K)
Merck	14,9037
Exposure limits	ACGIH TLV-TWA:2 mg/m3,Respirable particulate matter (containing no asbestos and < 1% crystalline silica) NIOSH REL-TWA:2 mg/m3;IDLH:1000 mg/m3
Cosmetics Ingredients Functions	BULKING SKIN PROTECTING ABRASIVE ABSORBENT ANTICAKING OPACIFYING SLIP MODIFIER
InChIKey	FPAFDBFIGPHWGO-UHFFFAOYSA-N
LogP	-9.4 at 25℃
Hardness, Mohs	1.0
Hardness, Vickers	47
IARC	(Vol. 42, Sup 7) 1987, 3 (Vol. 42, Sup 7, 93) 2010, 2B (Vol. 93) 2010
EPA Substance Registry System	Talc (14807-96-6)

Hazard Codes	Xn
Risk Statements	20-37
Safety Statements	36
OEB	B
OEL	TWA: 2 mg/m3 (resp)
WGK Germany	-
RTECS	WW2710000
TSCA	TSCA listed
HS Code	25262020
Hazardous Substances Data	14807-96-6(Hazardous Substances Data)
Toxicity	A finely powdered hydrous magnesium silicate. It is used in a variety of industrial processes and products, including rubber, paints, lubricants, insulating materials, cosmetics, and toiletries, such as baby and dusting powders. Acute inhalation of large quantities of talc, such as infants aspirating a massive amount of powder, has caused death within hours because of drying of the mucous membranes, clogging of the smaller airways, pulmonary edema and pneumonia. Chronic inhalation of talc, such as occurs in talc miners, leads to talcosis (a pneumoconiosis) involving pulmonary fibrosis and pleural sclerosis. Lymph nodes can also be affected. There are suggestions that talc can result in cervical or ovarian cancer although evidence for this is not extensive. Some talc is contaminated with asbestos.
IDLA	1,000 mg/m3