Muriate Of Potash

Product NameMuriate Of Potash
CAS7447-40-7
MFClK
MW74.55
EINECS231-211-8
MOL File7447-40-7.mol

Chemical Properties

Melting point

770 °C (lit.)

Boiling point

1420°C

Density

1.98 g/mL at 25 °C (lit.)

refractive index

n20/D 1.334

Flash point

1500°C

storage temp.

2-8°C

solubility

H₂O: soluble

form

random crystals

Specific Gravity

1.984

color

White

5.5-8.0 (20℃, 50mg/mL in H2O)

Odor

Odorless

PH Range

Water Solubility

340 g/L (20 ºC)

Sensitive

Hygroscopic

λmax

λ: 260 nm Amax: 0.02
λ: 280 nm Amax: 0.01

Crystal Structure

NaCl type

crystal system

Cube

Safety Information

Hazard Codes	Xi,C,F,Xn,T
Risk Statements	36-34-11-36/37/38-40-61-60
Safety Statements	24/25-39-26-22-23-45-36/37/39-16-36/37-53
RIDADR	UN 1824 8 / PGII
WGK Germany	1
RTECS	TS8050000
F	8
TSCA	Yes
HS Code	31042090
Hazardous Substances Data	7447-40-7(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 2600 mg/kg

MSDS

Provider	Language
Potassium chloride	English
ACROS	English

Usage And Synthesis

Physical properties

Muriate of potash is a metal halide salt, it is odorless and has a white or colorless vitreous crystal appearance. The solid dissolves readily in water, and its solutions have a salt-like taste.

Muriate of potash.png

Uses

Muriate of potash is used as a fertilizer, in medicine, in scientific applications, domestic water softeners (as a substitute for sodium chloride salt), and in food processing, where it may be known as E number additive E508.

Preparation

Muriate of potash is inexpensively available and is rarely prepared intentionally in the laboratory. It can be generated by treating potassium hydroxide (or other potassium bases) with hydrochloric acid:

KOH+HCl⟶KCl+H2O

Health Hazard

Muriate of potash is an essential constituent of the body for intracellular osmotic pressure and buffering, cell permeability, acid-base balance, muscle contraction and nerve function.

SYMPTOMS: Large doses of Muriate of potash usually induce vomiting, so acute intoxication by mouth is rare. If no pre-existing kidney damage, it is rapidly excreted. Poisoning disturbs the rhythm of heart. Large doses by mouth can cause gastrointestinal irritation, purging, weakness, and circulatory disturbances.

Chemical Reactivity

Muriate of potash is not in general strongly reactive. Violent reaction with BrF3 and with a mixture of sulfuric acid potassium permanganate mixture . Reacts with concentrated sulfuric acid to generate fumes of hydrogen chloride.

Toxicity

The typical amounts of muriate of potash found in the diet appear to be generally safe.In larger quantities, however, muriate of potash is toxic. The LD50 of orally ingested kcl is approximately 2.5 g/kg, or 190 grams (6.7 oz) for a body mass of 75 kilograms (165 lb).