Difference between revisions of "Sodium sesquicarbonate"

From CAMEO
Jump to navigation Jump to search
m (Text replace - "\[http:\/\/cameo\.mfa\.org\/materials\/fullrecord\.asp\?name=([^\s]+)\s(.*)\]" to "$2")
 
Line 7: Line 7:
 
urao; trona
 
urao; trona
  
== Other Properties ==
+
== Risks ==
 +
 
 +
* Skin contact causes irritation.
 +
* Hill Brothers: [https://www.hillbrothers.com/pdf/downloads/msds/sds/n/sodium-sesquicarbonate-sds.pdf SDS]
 +
 
 +
== Physical and Chemical Properties ==
  
 
Soluble in water (pH = 10.1 for a 0.1 molar solution).
 
Soluble in water (pH = 10.1 for a 0.1 molar solution).
Line 20: Line 25:
 
|-
 
|-
 
! scope="row"| Density
 
! scope="row"| Density
| 2.112
+
| 2.112 g/ml
 
|-
 
|-
 
! scope="row"| Molecular Weight
 
! scope="row"| Molecular Weight
Line 26: Line 31:
 
|}
 
|}
  
== Hazards and Safety ==
+
==Resources and Citations==
 
 
Skin contact causes irritation.
 
 
 
== Additional Information ==
 
  
° W.A.Oddy, M.J.Hughes "The Stabilization of Active Bronze and Iron Antiquities by the use of Sodium Sesquicarbonate" ''Studies in Conservation'', 15:183-189, 1970. ° C. Horie, J.Vint, "Chalconatronite: A By-Product of Conservation?" ''Studies in Conservation'', 27:185-186, 1982.
+
* W.A.Oddy, M.J.Hughes "The Stabilization of Active Bronze and Iron Antiquities by the use of Sodium Sesquicarbonate" ''Studies in Conservation'', 15:183-189, 1970.  
  
== Sources Checked for Data in Record ==
+
* C. Horie, J.Vint, "Chalconatronite: A By-Product of Conservation?" ''Studies in Conservation'', 27:185-186, 1982.
  
 
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993
 
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993

Latest revision as of 10:44, 2 June 2022

Description

White, needle-shaped crystals. Sodium sesquicarbonate occurs in nature as Trona. It is generally used as a water softener and mildly alkaline cleaner. Sodium sesquicarbonate was recommended in the 1970s as a stabilization treatment of corroded bronze and iron objects. However, more recent examinations indicate that bronze pieces treated with sesquicarbonate are later susceptible to the formation of Chalconatronite corrosion products.

Synonyms and Related Terms

urao; trona

Risks

  • Skin contact causes irritation.
  • Hill Brothers: SDS

Physical and Chemical Properties

Soluble in water (pH = 10.1 for a 0.1 molar solution).

Composition Na2CO3-NaHCO3-2H2O
CAS 553-96-0
Density 2.112 g/ml
Molecular Weight mol. wt. = 190.0

Resources and Citations

  • W.A.Oddy, M.J.Hughes "The Stabilization of Active Bronze and Iron Antiquities by the use of Sodium Sesquicarbonate" Studies in Conservation, 15:183-189, 1970.
  • C. Horie, J.Vint, "Chalconatronite: A By-Product of Conservation?" Studies in Conservation, 27:185-186, 1982.
  • 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 8823