Salts & Minerals
REACH
Sodium formaldehyde sulfoxylate
CAS Number
149-44-0
EC Number
205-739-4
Abbreviation
SFS
What is Sodium formaldehyde sulfoxylate?
Sodium formaldehyde sulfoxylate (CAS 149-44-0) is a reducing agent and bleaching compound. Also sold under trade names Aldanil, Discolite, and Formopan.
Where is Sodium formaldehyde sulfoxylate used?
- Textile dyeing and finishing: discharge agent
- Pulp and paper: brightening pulp and reducing residual color
- Leather processing: reducing bleach to even out hide coloration prior to dyeing
- Water treatment: neutralizing excess chlorine and other oxidants in effluent streams before discharge
- Abbreviated SFS, it strips color and neutralizes oxidizing agents in industrial processes.
Good to know: Sensitive to humid storage conditions; moisture-resistant packaging is used.
Commercial specifications
- Bulk and drummed formats
Other Names (Synonyms)
Aldanil|Discolite|Formopan|Hydrolit|Leptacid|Leptacit|Rodite|Bleachit D|SFS
What are the physical properties of Sodium formaldehyde sulfoxylate?
Melting Point 63-64 °C
Density 1.744[at 20℃]
Flash Point >100°C
Appearance solid
Color White to Off-White
Odor Mild garlic odor
Form Solid
Water Solubility soluble H2O, alcohol [HAW93]
Vapor Pressure 0.003Pa at 20℃
pH 9.5-10.5
Log P -3.4 at 22℃
How is Sodium formaldehyde sulfoxylate classified and handled safely? Learn More
Warning
GHS08· Health Hazard
Hazard Statements
H341 Suspected of causing genetic defects
H361 Suspected of damaging fertility or the unborn child
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P318 IF exposed or concerned, get medical advice.
P405 Store locked up.
P501 Dispose of contents/container in accordance with local regulations.
Which trade and regulatory codes apply to Sodium formaldehyde sulfoxylate?
HS Code 2930909899
WGK (Germany) 1