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| NITROSYLSULFURIC ACID | ||
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PRODUCT IDENTIFICATION |
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| CAS NO. | 7782-78-7 |
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| EINECS NO. | 231-964-2 | |
| FORMULA | HNO5S | |
| MOL WT. |
127.08 | |
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H.S.CODE |
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| TOXICITY | Oral rat LD50: 2140 mg/kg | |
| SYNONYMS | Nitrosyl sulfate; Nitrosyl Hydrogen Sulfate; | |
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Acide nitrosylsulfurique(French); Acido nitrosilsolforica(Italian); Nitroacid sulfate; NSA; Nitrosylschwefelsäure (German); ácido nitrosilsulfúrico (Spanish); |
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| DESCRIPTION | Sulfuric acid, monoanhydride with nitrous acid | |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES (40%) |
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| PHYSICAL STATE |
Yellowish viscous liquid | |
| MELTING POINT | > 0 C | |
| BOILING POINT | > 100 C | |
| SPECIFIC GRAVITY |
1.890 - 1.895 | |
| SOLUBILITY IN WATER | Reacts | |
| pH | ||
| VAPOR DENSITY | ||
| AUTOIGNITION |
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| NFPA RATINGS | Health: 3; Flammability: 0; Reactivity: 2; Special Hazard: W, OX | |
REFRACTIVE INDEX |
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| FLASH POINT |
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| STABILITY | Stable under ordinary conditions | |
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APPLICATIONS |
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| Nitroso is the prefix for NO- radical with trivalent nitrogen also known as hydroximino; oximido. Substances in which this group is attached to an oxygen atom are called nitrites (esters of nitrous acid); those in which the nitroso group is attached to a metal ion are called nitrosyls. Nitroso (-N=O) groups and azo (-N=N-) groups impart colour to the compound as these groups absorb light of characteristic wavelengths. Nitroso groups are strongly electron withdrawing and more similar to the C=O than the nirto group. Nitroso compound tends to dimerise. There is polarisation of the N=O bond and so behaves as a weak C=O. It undergoes addition of nucleophiles and condensation with primary amines and the anions of active methylene compounds. Nitroso groups are useful in addition and condensation reactions, stable nitroxide radical preparations, and isomerization to oxime. Oxidation undergoes readily with peracids, this is not available with nitro groups. Nitrosyl sulfate is used in diazotizing for amines, nitrosation, oxidation and oximation reactions and preparation of crystalline diazonium sulfates. | ||
| SALES SPECIFICATION | ||
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APPEARANCE |
Yellowish viscous liquid | |
| ASSAY (TITR.) |
39.5 - 40.5% | |
| WATER (KF) | 10% max | |
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IRON |
200mg/kg max | |
| TRANSPORTATION | ||
| PACKING | Iso-Tank | |
| HAZARD CLASS | 8 (Packing Group: II) | |
| UN NO. |
3264 | |
| OTHER INFORMATION | ||
| Hazard Symbols: O C, Risk Phrases: 14-35-8, Safety Phrases: 2-26-30 | ||
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