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Nitrosylsulfuric acid

Product Name
Nitrosylsulfuric acid
CAS No.
7782-78-7
Chemical Name
Nitrosylsulfuric acid
Synonyms
NITROSYL SULFATE;nitrosylsulphuric;Nitrosylschwefelsure;NITROSYSULFURIC ACID;Nitrososulfuric acid;NITROSYLSULFURIC ACID;NITROSYLSULPHURIC ACID;Nitrosyl hydrogensulfate;Nitrosylsulfuric acid 40%;Sulfuric nitrous anhydride
CBNumber
CB3695582
Molecular Formula
HNO5S
Formula Weight
127.07
MOL File
7782-78-7.mol
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Nitrosylsulfuric acid Property

Melting point:
-10 °C
Density 
1.612 g/mL at 25 °C
storage temp. 
Refrigerator (+4°C)
pka
-7.51±0.18(Predicted)
form 
Viscous Liquid
color 
Clear to milky yellow to greenish
Water Solubility 
decomposes
Merck 
13,6682
InChIKey
VQTGUFBGYOIUFS-UHFFFAOYSA-N
CAS DataBase Reference
7782-78-7(CAS DataBase Reference)
EPA Substance Registry System
Sulfuric acid, monoanhydride with nitrous acid (7782-78-7)
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Safety

Hazard Codes 
O,T
Risk Statements 
8-14-23/24/25-35-34
Safety Statements 
17-26-36/37/39-45-27
RIDADR 
UN 3264 8/PG 2
WGK Germany 
3
HazardClass 
8
PackingGroup 
II
HS Code 
28111980
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H272May intensify fire; oxidizer

H290May be corrosive to metals

H314Causes severe skin burns and eye damage

H330Fatal if inhaled

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
517070
Product name
Nitrosylsulfuric acid solution
Purity
40?wt. % in sulfuric acid
Packaging
250ml
Price
$37.1
Updated
2021/03/22
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Nitrosylsulfuric acid Chemical Properties,Usage,Production

Chemical Properties

Nitrosylsulfuric acid, HNO5S, is a straw-colored, oily liquid furnished as a 40% solution in 87% sulfuric acid,and stable at room temperature. It is used as a diazotizing agent for dyes,chemical intermediate, drugs and pharmaceuticals.

Physical properties

Nitrosylsulfuric acid is produced as an intermediate in the manufacture of sulfuric acid using the lead chamber process by the reaction of sulfur dioxide, nitrogen dioxide, oxygen, and water.
Nitrosylsulfuric acid also is made from absorption of nitrogen oxides (NOx) in oleum (fuming sulfuric acid):
N2O3 + 2H2SO4 → 2ONSO4 + H2O
or by the reaction of nitrosyl chloride with concentrated sulfuric acid:
ClNO + H2SO4 → ONSO4 + HCl
Another method of preparation involves the reaction of nitrosyl bromide with silver bisulfate:
AgHSO4 + BrNO → ONHSO4 + AgBr
In making disperse azo dyes, nitrosylsulfuric acid is produced by the addition of sodium nitrite, NaNO2, to concentrated sulfuric acid (1g NaNO2 per 13 g H2SO4).

Uses

For bleaching cereal milling products.

Uses

Nitrosylsulfuric acid is used for diazotisation, nitrosation, oxidation and oximation reactions. Product Data Sheet

General Description

Shipped in solution with sulfuric acid (solutions are usually 40% Nitrosylsulfuric acid and 54% sulfuric acid (Hawley)). Solution is a straw-colored oily liquid with a sharp odor. When pure, a crystalline solid decomposing at 73°C. Very irritating to skin and eyes. Used to make dyes and other chemicals.

Reactivity Profile

Nitrosylsulfuric acid is an oxidizing agent. Neutralizes chemical bases in exothermic reactions. An attempt to diazotize dinitroaniline using Nitrosylsulfuric acid resulted in an explosion with loss of life. The event was blamed on the high concentration of the reactants dinitroaniline hydrochloride and Nitrosylsulfuric acid [MCA Case History 1763. 1971].

Hazard

Strong irritant to skin and mucous membranes.

Health Hazard

TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases and runoff. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.

Safety Profile

A poison. A corrosive irritant to skin, eyes, and mucous membranes. Explosive reaction above 50°C with 2-chloro-4,6-dinitroaniline and 4- chloro-2,6-d1nitroalne. Potentially explosive reaction with dmitroaniline. When heated to decomposition it emits toxic fumes of SOx and NOx. See also SULFATES and NITRATES.

Nitrosylsulfuric acid Preparation Products And Raw materials

Raw materials

Preparation Products

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Nitrosylsulfuric acid Suppliers

Cheng Du Micxy Chemical Co.,Ltd
Tel
028-85632863-
Fax
028-85632863
Email
sales@micxy.com;
Country
China
ProdList
13065
Advantage
58
Hangzhou Jingyou Chemical Co., Ltd.
Tel
571-28350142- ;
Fax
0571-87219532
Email
sales@jingyouchem.com;joy@jingyouchem.com
Country
China
ProdList
126
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96500
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
Energy Chemical
Tel
021-58432009-
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
42923
Advantage
61
Chengdu Chuanke Fine Chemicals C.,Ltd.
Tel
+86 (28) 68626087 ;+86-28-85405627
Fax
+86-28-85408898
Email
customertwo@ckfc.asia
Country
China
ProdList
28
Advantage
62
Nanjing Vital Chemical Co., Ltd.
Tel
Please Send Email QQ:18652950785
Fax
025-87193546
Email
chemweiao@163.com
Country
China
ProdList
4425
Advantage
65
Thermo Fisher Scientific
Tel
800-810-5118
Fax
+86-10-84193589
Email
cnchemical@thermofisher.com
Country
China
ProdList
17441
Advantage
75
HBCChem, Inc.
Tel
+1-510-219-6317
Fax
+1-650-486-1361
Email
sales@hbcchem.com
Country
United States
ProdList
10657
Advantage
60
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd.
Tel
025-66099280-
Email
sales01@aikonchem.com
Country
China
ProdList
15440
Advantage
50
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View Lastest Price from Nitrosylsulfuric acid manufacturers

Zhuozhou Wenxi import and Export Co., Ltd
Product
Nitrosylsulfuric acid 7782-78-7
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-11
Zhuozhou Wenxi import and Export Co., Ltd
Product
Nitrosylsulfuric acid 7782-78-7
Price
US $15.00-10.00/KG
Min. Order
1KG
Purity
99%+ HPLC
Supply Ability
Monthly supply of 1 ton
Release date
2021-07-09

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