Formaldehyde solution, 35%

SKU:
TC557M
CAS Number : 50-00-0
Molecular Formula : CH₂O
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Product Identifier

Product Code TC557M
Molecular weight 30.03
Molecular formula CH2O
CAS No. 50-00-0

Technical Specification

Appearance (EP, BP, JP) Clear colorless liquid. IT may be cloudy after storage.
Appearance (USP) Clear, colorless or practically colorless liquid. On long standing, especially in the cold, it become cloudy because of the separation of paraformaldehyde. This cloudiness disappears when the solution is warmed.
Solubility (EP, BP) Miscible with water and with ethanol (96%).
Solubility (JP) Miscible with water and with ethanol (95%).
Solubility (USP) Miscible with water and with alcohol.
Identification A (EP, BP) A violet-blue or violet-red color develops within 5 min.
Identification A (USP) Metallic silver is produced either in the form of finely divided, gray precipitate or as a bright, metallic mirror on the sides of the test tube.
Identification 1 (JP) A gray precipitate is produced, or a silver mirror is formed on the wall of the test tube.
Identification B (EP, BP) An intense red color is formed.
Identification B (USP) A permanent, deep-red color appears.
Identification 2 (JP) A persistent, dark red color develops.
Identification C (EP, BP) A grey precipitate or a silver mirror is formed.
Identification D (EP, BP) It complies with the limits of the assay.
Appearance of solution (EP, BP) Solution of 10 mL in 50 mL of CO2 free water is colorless.
Acidity (EP, BP) Not more than 0.4 mL of 0.1 M sodium hydroxide is required to change the color of the indicator to red.
Acidity (USP) Not more than 10.0 mL of 0.1N sodium hydroxide is consumed.
Acidity (JP) A blue color develops.
Methanol, system suitability: Resolution : (EP, BP, USP) >= 2.0, between the peaks due to methanol and ethanol.
Methanol, GC (EP, BP, USP) 9.00-15.00%
Methanol, GC : (JP) 5.00-13.00%
Sulfated ash (EP, BP) <= 0.10%
Residue on ignition (JP) <= 0.06%
Assay, Iodometry (EP, BP) 34.50-38.00%
Assay, Iodometry (USP) min. 34.50%
Assay, Iodometry (JP) 35.00-38.00%

Storage and Shelf Life

Storage Condition Store below 30°C away from bright light.
Shelf life 48 months.
CAS Number : 50-00-0
Molecular Formula : CH₂O
More Information
Product Name Formaldehyde solution, 35%
SKU TC557M
CAS No 50-00-0
Molecular formula CH₂O
Molecular Weight 30.03
Storage Below 30°C
Shelf Life 4 Years
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