Muby Chemicals of Mubychem Group, established in 1976, is the original manufacturers of Specialty Chemicals, Pharmaceutical Excipient, Fragrance & Flavor chemicals, Shale Gas Fracturing Chemicals in India. Mubychem Group has several manufacturing facilities spread across Western India and world wide contacts and toll manufacturers. We are exporting globally to countries like USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Brazil, Chile, Argentina, Dubai, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, China, Germany, France, Italy, Portugal etc. The products are offered as per required specifications and in correct shape and size in mm or meshs or microns as specified by the buyer.
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Selenious acid Pure and USP Grade Manufacturers, SDS MSDS

Selenious Acid: CAS Number 7783-00-8, Chemical Formula H2SeO3, Molecular Weight 128.97, EC Number 231-974-7, HS Code ---**

For MSDS Sheet Click
MSDS Sheet of Selenious Acid Manufacturers

Selenious Acid
USP & Pure Grade
Selenious Acid

Selenous acid (or selenious acid) is the chemical compound with the formula H2SeO3. Structurally, it is more accurately described by (HO)2SeO.
The major use is in changing the color of steel, especially the steel in guns & razor blades the so-called "bluing" process which uses selenous acid. Some older were also made of blued steel. It is also used in darkening of copper, brass and bronze, producing a rich dark brown color.

Specifications of Commercial Pure Selenious Acid
CAS Number: [7783-00-8]
Molecular formula: H2SeO3
Molecular weight: 128.97
Description: White to off-white hygroscopic crystalline mass.
Residue on ignition: Max. 0.1 %.
Assay: Between 93.0% and 101.0%.

Selenious Acid USP Grade
H2SeO3 -- 128.97
Selenium dioxide, monohydrated.
Selenious acid [7783-00-8].
Selenious Acid contains not less than 93.0 percent and not more than 101.0 percent of H2SeO3.

Identification
A: Dissolve about 50 mg in 5 mL of water, add about 100 mg of sodium bicarbonate, and mix: gas bubbles develop.
B: Dissolve about 50 mg in 5 mL of 0.1 N hydrochloric acid, and add about 50 mg of stannous chloride: a curdy tan-orange precipitate is formed.

Tests
Residue on ignition: not more than 1.0 mg, from 10.0 g (0.01%).
Insoluble matter: Dissolve 1 g in 5 mL of water: it dissolves completely and the solution is clear.
Selenate and sulfate: Dissolve about 0.5 g in 10 mL of water, add 0.1 mL of hydrochloric acid and 1 mL of barium chloride, and mix: no turbidity or precipitate is formed in 10 minutes.
Assay: Transfer about 100 mg of Selenious Acid, accurately weighed, to a suitable glass-stoppered flask, and dissolve in 50 mL of water. Add 10 mL of potassium iodide solution (3 in 10) and 5 mL of hydrochloric acid, mix, insert the stopper in the flask, and allow to stand for 10 minutes. Add 50 mL of water and 3 mL of starch, and titrate with 0.1 N sodium thiosulfate until the solution is colorless, then titrate with 0.1 N iodine VS to a blue endpoint. Subtract the volume of 0.1 N iodine from the volume of 0.1 N sodium thiosulfate to obtain the volume of 0.1 N sodium thiosulfate equivalent to selenious acid. Each mL of 0.1 N sodium thiosulfate is equivalent to 3.225 mg of H2SeO3.

For Original Monographs of IP Indian Pharmacopoeia BP British Pharmacopoeia USP US Pharmacopoeia FCC Food Grade product, please check with the respective web-pages or books.

Manufacturers:

MUBY CHEMICALS
Ambernath Mumbai, Ankleshwar Gujarat, India
TEL: (OFFICE) 91-22-23770100, 23726950
Current Date Time in India GMT+5:30

e-mail: info@mubychem.com

USA & Canadian Customers may
e-mail: usa@mubychem.com
Call toll-free 1-844-682-9243 (1-844-MUBYCHEM)

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Last 17 May, 2017

List of All the IP BP USP FCC ACS Grades of Chemicals
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Borax; Sodium Borate Boric Acid
Calcium Acetate Calcium Chloride
Calcium Gluconate Calcium Hydroxide
Calcium Lactate Calcium Oxide
Calcium Saccharate Calcium Sulfate
Chromic Chloride Citric Acid
Calcium Citrate Copper Gluconate
Copper Sulfate, Cupric Sulphate Cupric Chloride
Ferrous Fumarate Ferrous Gluconate
Fumaric Acid Ferrous Sulphate
Ferric Sulfate Ferric Ammonium Citrate
Ferric Chloride  
Gentian Violet Mannitol
Magnesium Chloride Magnesium Gluconate
Magnesium Lactate Dihydrate Magnesium Sulfate
Magnesium Trisilicate Maleic Acid
Malic Acid BP USP Manganese Gluconate
Manganese Sulfate Manganese Chloride
Methylene Blue Potassium Bromide
Potassium Chloride Potassium Gluconate
Potassium Bitartrate, Cream of Tartar Potassium Hydroxide
Potassium Iodide Potassium Iodate
Potassium Sorbate Sodium Acetate
Sodium Bicarbonate Sodium Butyrate
Sodium Caprylate Sodium Fluoride
Sodium Gluconate Sodium Hydroxide Pellets
Sodium Iodide Sodium Lactate
Sodium Perborate Sodium Propionate
Sodium Thiosulfate Sodium Sulfate
Stannous Chloride Dihydrate Zinc Carbonate
Zinc Chloride Zinc Gluconate
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Selenious acid SDS GHS, MSDS Sheet, Material Safety Data Sheet

Section 1. Product Information

Product Name/Trade Name: Selenious acid
Synonym: Selenous acid
Chemical Formula: H2SeO3
Molecular Weight: 128,97 g/mol
CAS No.: 7783-00-8
EINECS EC Number: 231-974-7
Recommended usage: Industrial Manufacturing.

Section 2: Hazards Identification

GHS, Globally Harmonized System Classification in accordance with 29 CFR 1910
Classification according to Regulation (EC) No 1272/2008

Acute toxicity, Inhalation (Category 3), H331
Acute toxicity, Oral (Category 3), H301
Specific target organ toxicity - repeated exposure (Category 2), H373
Chronic aquatic toxicity (Category 1), H410

Labelling according GHS & Regulation (EC) No 1272/2008

GHS Label Elements
Aquatic Toxicity
Aquatic Toxicity

GHS Label Elements
Health Hazard
Health Hazard

GHS Label Elements
toxic.png
Health Hazard

Signal Words: Danger

Hazard statements:
H301 Toxic if swallowed.
H331 Toxic if inhaled.
H373 May cause damage to organs through prolonged or repeated exposure.
H410 Very toxic to aquatic life with long lasting effects.

Precautionary statements:  , P301+P310, P304+P340, P403+P233
P260: Do not breathe dust/fume/gas/mist/vapors/spray.
P264: Wash … thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P271: Use only outdoors or in a well-ventilated area.
P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P314: Get medical advice/attention if you feel unwell.
P330: Rinse mouth.
P301+310: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
P304+340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P391: Collect spillage.
P405: Store locked up.
P403+233: Store in a well ventilated place. Keep container tightly closed.
P501: Dispose of contents/container in accordance with local/regional/national/international regulation.

Classification according to EU Directives 67/548/EEC or 1999/45/EC:
T Toxic R23/25
R33
N Dangerous for the environment
R50/53
For the full text of the H-statements & R-phrases mentioned in this Section, see Section 16.

Section 3: Composition and Information on Ingredients

Product Name/Trade Name: Selenious acid
CAS No.: 7783-00-8
EINECS EC Number: 231-974-7

Section 4. First Aid & Procedure

Always get medical attention after the first aid is over.

Ingestion: Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. Get medical attention.
Skin:
Immediately flush skin with plenty of water for at least 15 minutes. Remove and wash contaminated clothing and shoes before reuse. Get medical attention if irritation develops.
Eyes:
Immediately flush eyes with plenty of water for 15 minutes, occasionally lifting upper and lower eyelids. Hold eyelids apart during irrigation. Get medical attention.
Inhalation:
Remove person to fresh air. If breathing is difficult, give oxygen. If not breathing administer artificial respiration. Get medical attention.

Section 5. Fire Fighting Measures

Flash Point: N/A
Auto ignition Temperature:
N/A
Fire/Explosion: Not considered to be a fire and explosion hazard.
Extinguishing Medium:
Water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Fire Fighting Instructions: Use suitable protective equipment for surrounding fire.

Section 6. Spills and Disposals

Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Don't touch or walk through this product. Stop leak if safe to do so. Prevent entry into waterways, drains, confined areas. Prevent dust cloud. Use clean non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal.

Section 7. Handling and Storage

Handling: Wash hands before eating. Use with adequate ventilation. Avoid breathing dust. Avoid contacting skin, eyes and clothing. Avoid prolonged or repeated exposure.
Storage:
Keep Selenious acid in a tightly closed container and store in a cool, dry, well ventilated place. Protect against physical damage. Isolate Selenious acid from all incompatible substances.

Section 8. Exposure Controls & Personal Protection

Exposure Limits for Selenious acid:
OSHA PEL: 0.2 mg/COM Ceiling for Selenium compounds (as Se).
ACGIH TLV: 0.2 mg/CBM (TWA) Selenium compounds (as Se).
Engineering Controls: Use adequate exhaust ventilation to keep airborne concentrations below the allowable exposure limit.
Personal Protective Equipment
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles.
Skin: Wear appropriate protective gloves.
Respiratory System: Approved or certified respirators.
Other Protective Equipments: Overalls or similar protective apparel, clean up facilities.
Don't eat, drink or smoke in work areas. Wash hands thoroughly after handling this material.

Section 9. Physical & Chemical Data

Physical State: Selenious acid is solid
Appearance: Solid.
Odor: NA
Specific Gravity: 3.00
pH Value:
NA
Melting Point:
70 °C
Boiling Point:
NA
Chemical Formula:
H2SeO3
Molecular Weight: 128,97 g/mol
Solubility:
Easily soluble in water, insoluble in ethanol

Section 10. Stability and Reactivity

Chemical Stability: Selenious acid is stable under normal temperatures and pressures.
Incompatibility (Materials to Avoid):
Strong reducing agents, Organic materials, Powdered metals.
Conditions to Avoid: Incompatible materials, exposure to moist air or water, excessive heat.
Hazardous Decomposition Products: Carbon dioxide, oxides of selenium.
Hazardous Polymerization:
Will not occur.

Section 11. Toxicological Information

Toxicity to Animals: LD50 Intravenous - mouse - 11 mg/kg. LD50 Dermal 4 mg/kg (Rabbit).
Carcinogenicity: Not listed as a suspected/confirmed carcinogen by ACGIH, IARC, NTP, SHA.
Mutagenic: Possible for humans. Laboratory experiments have shown mutagenic effects.
Specific target organ toxicity: repeated exposure: May cause damage to organs through prolonged or repeated exposure.

Section 12. Ecological Information

Ecotoxicity: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Results of PBT and vPvB Assessment: Not available.
Persistence and Degradability: Soluble in water. Persistence is unlikely.
Environmental Precautions: DO NOT DISCHARGE into drains and rivers.

Section 13. Disposal Suggestions

Dispose of in accordance with all applicable local, state and federal regulations at an approved waste disposal facility.

Section 14. Transport and Label Information

DOT (USA):
UN-No UN3283
Proper Shipping Name SELENIUM COMPOUND, N.O.S
Proper technical name: Selenous acid
Hazard Class 6.1
Packing Group I
IMDG/IMO
UN-No UN3283
Proper Shipping Name SELENIUM COMPOUND, N.O.S
Hazard Class 6.1
Packing Group I
IATA:
UN-No UN3283
Proper Shipping Name SELENIUM COMPOUND, N.O.S
Hazard Class 6.1
Packing Group I
ADR/RID:
UN-No UN3283
Proper Shipping Name SELENIUM COMPOUND, N.O.S
Hazard Class 6.1
Packing Group I

Section 15. Regulatory Information

USA:
TSCA 12(b
): Not applicable.
SARA 311/312: Hazardous Categorization: Acute Health Hazard; Chronic Health Hazard.

Canada WHMIS: Class D D1A Very toxic materials.

Section 16. Other Information

EINECS EC Number: 231-974-7
H301 = Toxic if swallowed.
H301 + H331 = Toxic if swallowed or if inhaled
H331 = Toxic if inhaled.
H373 = May cause damage to organs through prolonged or repeated exposure.
H400 = Very toxic to aquatic life.
N = Dangerous for the environment
T = Toxic
R23/25 = Toxic by inhalation and if swallowed.
R33 = Danger of cumulative effects.
R50/53 = Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic
environment.

Disclaimer:
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Our company provides this MSDS sheet in good faith but makes no representation as to its comprehensiveness or accuracy. This SDS sheet is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. The above information has been compiled from various sources and has the possibility of discrepancy and being out-dated information. Individuals receiving the information must exercise their independent judgment and do further search in determining its appropriateness for a particular purpose. In no case shall our company be liable to loss or damages by the product user.
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