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8014-95-7

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Basic Information
CAS No.: 8014-95-7
Name: Sulfuric acid fuming
Molecular Structure:
Molecular Structure of 8014-95-7 (Sulfuric acid fuming)
Formula: H2O7S2
Molecular Weight: 178.14
Synonyms: Sulfur trioxide, mixt. with sulfuric acid;Sulfuric acid, mixture with sulfur trioxide;Fuming sulfuric acid;Sulfuric acid,compounds,mixt. with sulfur trioxide;Oleum iodisum;Sulfuric acid mixture with sulfur trioxide;Sulfuric acid (fuming);sulfuric acid; sulfur trioxide;Sulfuric acid, mixt with sulfur trioxide;Oleum (Fuming Sulfuric acid);
EINECS: 231-639-5
Density: 1.925 g/cm3
Melting Point: 2 °C
Boiling Point: 330 °C at 760 mmHg
Flash Point:
Solubility: soluble in water
Appearance: liquid
Hazard Symbols: CorrosiveC
Risk Codes: 36/38-37-35-14
Safety: 26-30-45
Transport Information: UN 3264 8/PG 3
PSA: 166.28000
LogP: 0.71980
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Consensus Reports

IARC Cancer Review: Group 1 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 54 ,1992,p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 54 ,1992,p. 41.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

Standards and Recommendations

NIOSH REL: TWA 1 mg/m3
DOT Classification:  8; Label: Corrosive; DOT Class: 8; Label: Corrosive, Poison

Specification

The Sulfuric acid, fuming is an organic compound with the formula H2O7S2. The IUPAC name of this chemical is sulfuric acid; sulfur trioxide. With the CAS registry number 8014-95-7, it is also named as Oleum iodisum. The product's categories are Refined & Fuming Sulfuric Acid(Oleum); Fuming Sulfuric Acid. Besides, it should be stored in a closed and dry place. It mainly used as a sulfonating agent, which is widely used in the manufacture of dyes, explosives, nitrocellulose and drugs.

Physical properties about Sulfuric acid, fuming are: (1)ACD/LogP: -1.03; (2)ACD/LogD (pH 5.5): -5.53; (3)ACD/LogD (pH 7.4): -5.53; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)#H bond acceptors: 4; (7)#H bond donors: 2; (8)Polar Surface Area: 60.98 Å2; (9)Enthalpy of Vaporization: 62.94 kJ/mol; (10)Boiling Point: 330 °C at 760 mmHg; (11)Vapour Pressure: 3.35E-05 mmHg at 25°C.

Preparation: this chemical is produced in the contact process, where sulfur is oxidized to sulfur trioxide which is subsequently dissolved in concentrated sulfuric acid. Sulfuric acid itself is regenerated by dilution of part of the oleum.

When you are using this chemical, please be cautious about it as the following:
It reacts violently with water and causes severe burns. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical is irritating to eyes, respiratory system and skin. When you are using it, never add water to this product. In case of accident or if you feel unwell seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: O=S(=O)=O.O=S(=O)(O)O
(2)InChI: InChI=1/H2O4S.O3S/c1-5(2,3)4;1-4(2)3/h(H2,1,2,3,4);
(3)InChIKey: HIFJUMGIHIZEPX-UHFFFAOYAQ
(4)Std. InChI: InChI=1S/H2O4S.O3S/c1-5(2,3)4;1-4(2)3/h(H2,1,2,3,4);
(5)Std. InChIKey: HIFJUMGIHIZEPX-UHFFFAOYSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LC50 inhalation 347ppm/1H (347ppm)   Toxicology and Applied Pharmacology. Vol. 42, Pg. 417, 1977.