FUMING SULFURIC ACID
Sulfuric acid
CAS: 7664-93-9;8014-95-7;17107-61-8;12772-98-4
Molecular Formula: H2O4S
FUMING SULFURIC ACID - Names and Identifiers
FUMING SULFURIC ACID - Physico-chemical Properties
| Molecular Formula | H2O4S |
| Molar Mass | 98.08 |
| Density | 1.840 g/mL at 25 °C (lit.) |
| Melting Point | 10°C |
| Boling Point | ~290 °C (lit.) |
| Flash Point | 11°C |
| Water Solubility | miscible |
| Solubility | H2O: soluble |
| Vapor Presure | 1 mm Hg ( 146 °C) |
| Vapor Density | <0.3 (25 °C, vs air) |
| Appearance | Viscous Liquid |
| Specific Gravity | 1.84 |
| Color | Pale yellow to slight tan |
| Odor | Odorless |
| Exposure Limit | TLV-TWA air 1 mg/m3 (ACGIH, MSHA,and OSHA); TLV-STEL 3 mg/m3 (ACGIH).. |
| Merck | 14,8974 |
| pKa | -3-2(at 25℃) |
| PH | 2.75(1 mM solution);1.87(10 mM solution);1.01(100 mM solution); |
| Storage Condition | no restrictions. |
| Stability | Stable, but reacts with moisture very exothermically, which may enhance its ability to act as an oxidizing agent. Substances to be avoided include water, most common metals, organic materials, strong |
| Sensitive | Hygroscopic |
| Physical and Chemical Properties | appearance and properties: pure product is colorless transparent oily liquid, odorless. |
| Use | For the production of chemical fertilizers, in the chemical industry, medicine, plastics, dyes, petroleum refining and other industries also have a wide range of applications. |
FUMING SULFURIC ACID - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R35 - Causes severe burns R39/23/24/25 - R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S30 - Never add water to this product. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S16 - Keep away from sources of ignition. |
| UN IDs | UN 3264 8/PG 3 |
| WGK Germany | 1 |
| RTECS | WS5600000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 28070010 |
| Hazard Class | 8 |
| Packing Group | II |
| Toxicity | LD50 orally in rats: 2.14 g/kg (Smyth) |
FUMING SULFURIC ACID - Upstream Downstream Industry
FUMING SULFURIC ACID - Preparation Method
Open Data Verified Data
sulfur dioxide gas is prepared from sulfur dioxide, and then sulfur dioxide is catalytically oxidized to generate sulfur trioxide. Finally, sulfuric acid is prepared by contacting sulfur trioxide with water.
Last Update：2022-01-01 08:53:07
FUMING SULFURIC ACID - Nature
Open Data Verified Data
colorless and transparent oily liquid. Tasteless. Boiling point of about 290 deg C; Relative density of 1. 84. Open air quickly absorb water, can be miscible with water, ethanol phase, while releasing a lot of heat and the volume reduction. Contact with flammable materials, organic matter, etc. will occur intense reaction, and even cause combustion. Can react with some active metal powder, release hydrogen. It is highly corrosive and can corrode most metals and plastics, rubber and coatings.
Last Update：2024-01-02 23:10:35
FUMING SULFURIC ACID - Standard
Authoritative Data Verified Data
In this strain, sulfur dioxide produced by roasting sulfur-containing minerals is converted into sulfur trioxide by the action of vanadium pentoxide, and then made by human water. The content of sulfuric acid (h2so4) shall not be less than 95.0% (g/g).
Last Update：2024-01-02 23:10:35
FUMING SULFURIC ACID - Trait
Authoritative Data Verified Data
This product is colorless, odorless clear oily liquid; Strong water absorption, can be miscible with water or ethanol, while releasing a lot of heat.
relative density
The relative density of this product (General 0601) is 1.831~1.849
Last Update：2022-01-01 11:26:35
FUMING SULFURIC ACID - Use
Open Data Verified Data
It can be used as a softener for hard water, an ion exchange regenerant, a pH adjuster, an oxidizing agent, a detergent, and the like. It can also be used in the manufacture of chemical fertilizers, pesticides, dyes, pigments, plastics, chemical fibers, explosives and various sulfates. It is widely used in petroleum refining, non-ferrous metal smelting, iron and steel pickling, tanning process, as well as Coking Industry, light textile industry, national defense and military industry.
Last Update：2022-01-01 08:53:08
FUMING SULFURIC ACID - Differential diagnosis
Authoritative Data Verified Data
This product sulfate identification reaction (General 0301).
Last Update：2022-01-01 11:26:35
FUMING SULFURIC ACID - Safety
Open Data Verified Data
sulfuric acid has a strong corrosion and water absorption, can seriously burn the human body, so contact or use of sulfuric acid, the staff must be protected. When sulfuric acid with a content of less than 76% is reacted with metal, hydrogen gas is evolved. Should be placed in a cool and ventilated place to prevent sun and rain, do not contact with fire sources, not with explosives, oxidants and organic compounds mixed storage. Transport rules should be strictly observed when transporting dangerous goods, handling should be careful to prevent damage to the packaging. In case of fire, water mist should be used to put out, or carbon dioxide fire retardants should be used. Do not use high pressure water column to prevent sulfuric acid splash.
Last Update：2022-01-01 08:53:08
FUMING SULFURIC ACID - Exam
Authoritative Data Verified Data
clarity and color of solution
Take 5.0 of this product, slowly add it to 30ml of cold water, cool it, dilute it to 50ml with water, and check it according to law (General rule 0901 and general rule 0902). The solution should be clear and colorless.
chloride
take this product 2.0g (l.lml), check according to law (General rule 0801), compared with the standard sodium chloride solution 0.005% M l made of the control solution, not more concentrated ().
reducing substance
Take 5.0g(2.8) of this product, slowly add it to 15ml of cold water (operate in ice bath), Cool It, dilute it to 25m l with water, add 0.001mol/L potassium permanganate solution 0.10, shake, and sodium sulfite solution 5.0ml from "diluted with water to 25ml", compared with the control solution prepared by the method, the color should not be lighter.
ignition residue
Take 40g(22ml) of this product, steam dry, check according to law (General rule 0841), residual Tong shall not pass 2mg (005%).
Iron Salt
Take 10g(5.5ml) of this product, steam dry and burn until the sulfuric acid vapor is removed, let it cool, add 1 ml of dilute hydrochloric acid to the residue, slowly heat it to dissolve, and dilute it to 25ml with water; take 1 ml, dilute to 10ml with water, check according to law (General rule 0807), and compare with the control solution made of 0.0025% of standard iron solution, not deeper ().
Heavy metals
take 4.0g(2.2) of this product, add it to 0.1% sodium carbonate solution, evaporate it to dryness, and check it according to law (General rule 0821 second law). The content of heavy metals shall not exceed 5 parts per million.
arsenic salt
take 0822G (l.1ml) of this product, add it to about 20ml of water, cool it, dilute it to 25ml with water, and check it according to law (General Principles 0.0001%, first law), and it shall comply with the regulations ().
Last Update：2022-01-01 11:26:36
FUMING SULFURIC ACID - Content determination
Authoritative Data Verified Data
accurately weigh about 1.8g of this product, store about 20ml of water in a plug Erlenmeyer flask, add 25ml of water and 2 drops of Methyl red indicator solution, and titrate with sodium hydroxide titration solution (lmol/L). Each l of sodium hydroxide titrant (1 mol/L) corresponds to 49.04mg of H2SO4.
Last Update：2022-01-01 11:26:37
FUMING SULFURIC ACID - Category
Authoritative Data Verified Data
pharmaceutical excipients, pH regulator.
Last Update：2022-01-01 11:26:37
FUMING SULFURIC ACID - Storage
Authoritative Data Verified Data
sealed storage.
Last Update：2022-01-01 11:26:37
FUMING SULFURIC ACID - Reference Information
| LogP | -1 at 25℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| identification test | The identification was carried out according to the GT-30 method. |
| content analysis | take a sample of 1ml and put it in a small conical flask with a glass plug of dry constant weight, add the plug, accurately weigh, carefully add about 30ml of water. After cooling, several drops of methyl orange Test Solution (TS148) were added and titrated with 1mol/L hydrogen oxide. 1mol/L of sodium hydroxide per ml equivalent to sulfuric acid (H2S04)49.04mg. Sulfuric acid at a concentration of less than 93.0% can be expressed in terms of wave degree (° Bé). A sample of about 200ml, pre-cooled to below 15 °c, was taken into a 250ml pycnometer cylinder. Insert a suitable wave-like hydrometer with a scale spacing of 0.1 ° Bé, adjust the temperature accurately to 15.6 ° C, record the reading at the meniscus bottom, and estimate. Check the percentage concentration according to the relative density and concentration Comparison table of sulfuric acid in table 05013. |
| toxicity | LD502.14g/kg (rat, oral). GRAS(FDA,§ 184.1095,2000). see industrial sulfuric acid. |
| Use limit | FAO/WHO(1984): edible acid casein, according to GMP. FDA § 184.1095(2000): alcoholic beverage 0.014%; Cheese 0.0003%. |
| Use | for the production of chemical fertilizers, chemical, pharmaceutical, plastic, dye, petroleum refining and other industries are also widely used. widely used in the synthesis of dyes, explosives, drugs, etc. used in storage batteries commonly used as analytical reagents, dehydrating agents and sulfonating agents used in capacity analysis, has strong dehydration and oxidation, used as dehydrating agent in organic synthesis used as analytical reagent, also used in organic synthesis mainly used in the production of phosphoric acid, phosphate fertilizer, various sulfates, titanium dioxide, detergents, dyes, drugs, etc., can also be used as a pickling agent, sulfonating agent, dehydrating agent, etc. used in dye intermediates, pharmaceuticals, pesticides, plastics, chemical fiber, leather making, pulp washing and pigments, can also be used as dehydrating agent, gas desiccant |
| production method | distillation method using industrial sulfuric acid as raw material, after distillation, condensation, separation, ultra-clean filtration to remove impurities, grade BV-1 sulfuric acid was obtained as colorless and transparent. Industrial sulfuric acid was used as the raw material by distillation, the raw material was purified by distillation, the impurities were removed by condensation separation, and the dust particles were removed by microporous filter membrane filtration, and the colorless transparent MOS grade and low dust high purity grade sulfuric acid were prepared. at present, there are blow-out method and distillation method for domestic production of battery sulfuric acid. Foreign fuming sulfuric acid from a sulfuric acid plant to obtain pure sulfur trioxide, tongman special distilled water prepared concentration of 98% absorption sulfuric acid cycle absorption tower, can produce high-quality battery sulfuric acid. Blow-out method will have a certain pressure of clean air directly through the industrial sulfuric acid, will be dissolved in sulfuric acid sulfur dioxide blown out, until qualified. The industrial sulfuric acid is heated and evaporated by distillation, so that the liquid sulfuric acid becomes sulfuric acid vapor, and the sulfuric acid vapor is condensed by the condenser to prepare the battery sulfuric acid product. |
| category | corrosive article |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50:2140 mg/kg; Inhalation-mouse LC50:320 mg/m3/2 h |
| stimulation data | eyes-rabbit 5 mg/30 s severe |
| explosive hazard characteristics | explosion in water Fever; Combustion support in case of combustible; reacts with metals to form combustible explosive hydrogen gas |
| flammability hazard characteristics | flammable in case of organic matter; Flammable hydrogen evolution in case of metal |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature, separate storage of combustible materials |
| extinguishing agent | carbon dioxide, dry sand; Columnar water |
| Occupational Standard | TWA 1 mg/m3; Tel 3 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-threatening and health concentration | 15 mg/m3 |
Last Update：2024-04-10 22:29:15
Supplier List
Multiple SpecificationsSpot supply
Product Name: Sulfuric acid Visit Supplier Webpage Request for quotationCAS: 7664-93-9
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
View History
Raw Materials for FUMING SULFURIC ACID
Downstream Products for FUMING SULFURIC ACID
Tetrachlorophthalic anhydride
1,5-Dihydroxynaphthalene
Dimethyl 5-sulfoisophthalate sodium salt hydrate
3-Hydroxybenzoic acid
2-(4-aminophenyl)-6-methylbenzothiazole-7-sulfonic acid
1,5-Dihydroxynaphthalene
Dimethyl 5-sulfoisophthalate sodium salt hydrate
3-Hydroxybenzoic acid
2-(4-aminophenyl)-6-methylbenzothiazole-7-sulfonic acid