Difference between revisions of "Sodium metaphosphate"

Latest revision as of 08:18, 2 June 2022

Description

A small polymer, usually 3 to 20 units, of sodium phosphate. Small very long chains form vitreous compounds. Sodium metaphosphate is used as water softeners, sequestrants, detergents (Calgon®), emulsifiers, corrosion inhibitors, and dental abrasives.

Synonyms and Related Terms

sodium hexametaphosphate; sodium trimetaphosphate; sodium polyphosphate; Maddrell's salt; Calgon; Graham's salts

Risks

Skin contact can cause irritation.
Phosphates can be detrimental to the environment.
Fisher Scientific: MSDS

Physical and Chemical Properties

pH of aqueous solution = 6.0 - 7.7

Composition	[NaPO3]n
CAS	10124-56-8
Melting Point	1184 C
Density	2.18 G/ml
Molecular Weight	mol. wt. = 611.77

Resources and Citations

Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 8787

@@ Line 7: / Line 7: @@
 sodium hexametaphosphate; sodium trimetaphosphate; sodium polyphosphate; Maddrell's salt; Calgon; Graham's salts
-== Other Properties ==
+== Risks ==
+* Skin contact can cause irritation.
+* Phosphates can be detrimental to the environment.
+* Fisher Scientific: [https://fscimage.fishersci.com/msds/21260.htm MSDS]
+== Physical and Chemical Properties ==
 pH of aqueous solution = 6.0 - 7.7
@@ Line 20: / Line 26: @@
 |-
 ! scope="row"| Melting Point
-| 1184
+| 1184 C
 |-
 ! scope="row"| Density
-| 2.18
+| 2.18 G/ml
 |-
 ! scope="row"| Molecular Weight
@@ Line 29: / Line 35: @@
 |}
-== Hazards and Safety ==
+==Resources and Citations==
-Skin contact can cause irritation. Phosphates can be detrimental to the environment.
-Fisher Scientific: [https://fscimage.fishersci.com/msds/21260.htm MSDS]
-== Sources Checked for Data in Record ==
 * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993