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Anhydrous Sodium Sulfite

Name: Anhydrous Sodium Sulfite
SKU: 0

Basic Information

CAS No.: 7757-83-7
Molecular Formula: Na2O3S
Molecular Weight: 126.04

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Product Details

Cinnamic aldehyde is used as a flavoring agent, ingredient of fragrance in soft drinks, ice creams, dentifrices, pastries, chewing-gum, etc. It can induce both contact urticaria and delayed-type reactions. It can be implicated in contact dermatitis in those who work in the perfume industry or food handlers. Cinnamic aldehyde is contained in the "fragrance mix".

Chemical Properties

Property	Value
Melting point	−9-−4 °C(lit.)
Boiling point	248 °C (lit.)
Density	1.05 g/mL at 25 °C (lit.)
Vapor density	4.6 (vs air)
Vapor pressure	<0.1 hPa (20 °C)
FEMA	2286 \| CINNAMALDEHYDE
Refractive index	n20/D1.622(lit.)
Fp	160 °F
Storage temp.	Store below +30°C.
Solubility	1g/l soluble
Form	White powder
Pka	0[at 20 ℃]
Color	White
Specific Gravity	1.05
Odor	Strong odor of cinnamon
Biological source	Cassia oil
Odor Type	Spicy
Water Solubility	Slightly soluble
Merck	13,2319
JECFA Number	656
Dielectric constant	16.9（24℃）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.
InChIKey	KJPRLNWUNMBNBZ-QPJJXVBHSA-N
LogP	1.83-2.1 at 25-27℃
CAS DataBase Reference	7757-83-7(CAS DataBase Reference)
NIST Chemistry Reference	Cinnamylaldehyde(7757-83-7)
EPA Substance Registry System	Cinnamaldehyde (7757-83-7)

Safety Information

Property	Value
Hazard symbol	Xn
Hazard class codes	31-36/37/38-22-40-36/38
Safety descriptions	24/25-36-26-22
WGK Germany	1
RTECS number	WE2150000
F	3-10
TSCA	TSCA listed
HS code	28321000
Storage class	13 - Non-combustible solids
Hazardous substances data	7757-83-7 (Hazardous Substances Data)
Toxicity	LD50 i.v. in mice: 175 mg/kg (Hoppe, Goble, J. Pharmacol. Exp. Ther. 101, 101 (1951))

Product Usage

Anhydrous Sodium Sulfite is an industrial chemical with strong reducing properties, playing a pivotal role as a "deoxygenator" and "preservative" across various production sectors. In water treatment, it is extensively used for deoxygenating boiler feedwater to prevent metallic pipe corrosion caused by oxidation. In the paper and textile industries, it serves as a bleaching auxiliary to remove residual oxygen and chlorine from fabrics and pulp, thereby protecting fiber strength. In the photography industry, it is an indispensable preservative in developing solutions, effectively preventing the oxidation of developing agents by air. Furthermore, it is utilized as a reducing agent in fine chemicals and serves as an antioxidant and preservative in the food industry for dried fruits and preserves to maintain their natural color.

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Anhydrous Sodium Sulfite

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