2,4-dinitro-benzenesulfonicaci

Name	2,4-Dinitrobenzenesulfonic acid hydrate
Synonyms	2,4-dinitrobenzenesulfonate 2,4-DINITROBENZOSULFONIC ACID 2,4-dinitro-benzenesulfonicaci 2,4-DINITROBENZENESULFONIC ACID Benzenesulfonic acid, 2,4-dinitro- kyselina2,4-dinitrobenzensulfonova Kyselina 2,4-dinitrobenzensulfonova 2,4-Dinitrobenzenesulfonic acid hydrate 2,4-DINITROBENZENESULFONIC ACID, HYDRATE 2,4-Dinitrobenzenesulfonic acid dihydrate
CAS	89-02-1
EINECS	201-876-9
InChI	InChI=1/C6H4N2O7S/c9-7(10)4-1-2-6(16(13,14)15)5(3-4)8(11)12/h1-3H,(H,13,14,15)/p-1

Molecular Formula	C6H4N2O7S
Molar Mass	248.17
Density	1.745 (estimate)
Melting Point	95-98°C(lit.)
Water Solubility	Soluble in methanol (2.5% w/v), slightly soluble in water.
Appearance	solid
pKa	-2.21±0.50(Predicted)
Storage Condition	Room Temprature
Refractive Index	1.6430 (estimate)
MDL	MFCD00066017
Physical and Chemical Properties	Melting Point: 116 - 120
Use	This product is a dye intermediate.

Hazard Symbols	C - Corrosive
Risk Codes	34 - Causes burns
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
UN IDs	UN 1759 8/PG 2
WGK Germany	3
RTECS	DB6500000
TSCA	Yes
Hazard Class	8
Packing Group	III

The melting point of anhydrous is 130 ℃. Soluble in water and ethanol, insoluble in petroleum ether and benzene.

Last Update：2022-10-16 17:29:37

EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
purpose	This product is a dye intermediate.
production method	is obtained by sulfonation of 2, 4-dinitrochlorobenzene. 1100L of water was added to the sulfonated Pan, heated to 50 °c, and 119kg of light magnesium oxide was added with rapid stirring. After stirring for a while, 4.5 of molten 2, 4-dinitrochlorobenzene was added, heating to 65 ° C. Was continued, and of sodium bisulfite solution (made up to a concentration of-5N) was added over 4 hours. After completion of the reaction, it was cooled to 55 °c. Hydrochloric acid was added for acidification, and then 35kg of refined salt was added, cooled to 20 ° C., allowed to stand, and filtered to obtain the product. Commodities are generally in the form of sodium 2, 4-dinitrobenzenesulfonate, CAS number [885-62-1].

Last Update：2024-04-10 22:29:15

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