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Tin Fluoride, Stannous Fluoride USP Grade Manufacturers, SDS GHS MSDS Sheet

Stannous Fluoride: CAS Number: 7783-47-3, EINECS EC Number: 231-999-3 , Molecular Formula: SnF2, Molecular Weight: 156.7, HS Code ---**

For MSDS Sheet Click
SDS MSDS Sheet of Stannous Fluoride Manufacturers

Stannous Fluoride
Tin Fluoride Pure & USP Grade
Tin Stannous Fluoride

Tin (II) fluoride SnF2, commercially referred to commercially as stannous fluoride. It is a colorless solid used as an ingredient in toothpastes that are typically more expensive than those that use sodium fluoride. Stannous fluoride converts the calcium mineral apatite into fluorapatite, which makes tooth enamel more resistant to bacteria-generated acid attacks. In toothpastes containing calcium minerals, sodium fluoride becomes ineffective over time, while stannous fluoride remains effective in strengthening tooth enamel.
SnF2 acts as a Lewis acid.
SnF2 is a reducing agent.

Stannous Fluoride USP Grade
SnF2 -- 156.71
Tin fluoride (SnF2) [7783-47-3].
Stannous Fluoride contains not less than 71.2 percent of stannous tin (Sn ++), and not less than 22.3 percent and not more than 25.5 percent of fluoride (F), calculated on the dried basis.

Identification—
A: To 5 mL of a solution (1 in 100) in a test tube add 2 mL of calcium chloride TS: a fine, white precipitate of calcium fluoride is formed.
B: Mix on a spot plate 2 drops of a solution (1 in 100) with 2 drops of silver nitrate TS: a brown-black precipitate is formed.
C: Add 1 drop of a solution (1 in 100) to 2 drops of mercuric chloride: a white, silky precipitate is formed. On further addition of the solution (1 in 100), a brown-black precipitate is formed.

pH: between 2.8 and 3.5, in a freshly prepared 0.4% solution.
Loss on drying: Dry it at 105C for 4 hours: it loses not more than 0.5% of its weight.
Water-insoluble substances: Transfer about 10 g, accurately weighed, to a 400-mL plastic beaker, add 200 mL of water, and stir with a plastic rod for 3 minutes, or until no more solid dissolves. Filter through a tared filtering crucible, and wash thoroughly, first with ammonium fluoride solution (1 in 100), then with water. [NOTE—Prepare and use the filtering crucible in a well-ventilated hood.] Dry the residue at 105C for 4 hours, cool, and weigh: the weight of the residue does not exceed 0.2%.
Antimony: —
Rhodamine B solution: Dissolve 20 mg of rhodamine B in 200 mL of 0.5 N hydrochloric acid.
Standard preparation: Transfer 55.0 mg of antimony potassium tartrate, accurately weighed, to a 200-mL volumetric flask, dissolve in water, dilute with water to volume, and mix. Transfer 5.0 mL of this solution to a 500-mL volumetric flask, add 6 N hydrochloric acid to volume, and mix.
Test preparation: Transfer 1.0 g of Stannous Fluoride, accurately weighed, to a 50-mL volumetric flask, add 6 N hydrochloric acid to volume, and mix.
Procedure: Pipet 5 mL each of the Standard preparation and the Test preparation into separate 125-mL separators, add 15 mL of hydrochloric acid and 1 g of ceric sulfate, and allow to stand for 5 minutes, with occasional shaking. Add 500 mg of hydroxylamine hydrochloride, and shake for 1 minute. Pipet 15 mL of isopropyl ether into the mixture, shake for 30 seconds, add 7 mL of water, and mix. Cool in a water bath at room temperature for 10 minutes, shake for 30 seconds, allow the layers to separate, and discard the aqueous phase. Add 20 mL of Rhodamine B solution, shake for 30 seconds, and discard the aqueous layer. Decant the ether layer from the top of the separator, and centrifuge, if necessary, to obtain a clear solution. Concomitantly determine the absorbances of the ether solutions from the Test preparation and the Standard preparation at the wavelength of maximum absorbance at about 550 nm, with a suitable spectrophotometer, using water as the blank: the absorbance of the Test preparation does not exceed that of the Standard preparation (0.005%).
Assay for stannous ion: —
0.1 N Potassium iodide-iodate: In a 1000-mL volumetric flask, dissolve 3.567 g of potassium iodate, previously dried at 110 to constant weight, in 200 mL of oxygen-free water containing 1 g of sodium hydroxide and 10 g of potassium iodide, dilute with oxygen-free water to volume, and mix. Standardize this solution by titrating a solution prepared from an accurately weighed quantity of reagent tin (Sn) and hydrochloric acid. Each mL of 0.1 N Potassium iodide-iodate is equivalent to 5.935 mg of Sn.
Procedure: Transfer about 250 mg of Stannous Fluoride, accurately weighed, to a 500-mL conical flask, and add 300 mL of hot, recently boiled 3 N hydrochloric acid. While passing a stream of an oxygen-free inert gas over the surface of the liquid, swirl the flask to dissolve the Stannous Fluoride, and cool to room temperature. Add 5 mL of potassium iodide, and titrate in an inert atmosphere with 0.1 N Potassium iodide-iodate, adding 3 mL of starch as the endpoint is approached. Each mL of 0.1 N Potassium iodide-iodate is equivalent to 5.935 mg of Sn++.
Assay for fluoride: —
[NOTE—Store all solutions, except Buffer solution, in plastic containers.]
Buffer solution: Dissolve 57 mL of glacial acetic acid, 58 g of sodium chloride, and 4 g of (1,2-cyclohexylenedinitrilo)tetraacetic acid in 500 mL of water. Adjust with 5 N sodium hydroxide to a pH of 5.25 ±0.25, dilute with water to 1000 mL, and mix.
Standard preparations: Dissolve an accurately weighed quantity of USP Sodium Fluoride quantitatively in water to obtain a solution containing 420 Cg per mL. Each mL of this solution (Standard preparation A) contains 190 Cg of fluoride ion (10 2 M). Transfer 25.0 mL of Standard preparation A to a 250-mL volumetric flask, dilute with water to volume, and mix. This solution (Standard preparation B) contains 19 Cg of fluoride ion per mL (10 3 M). Transfer 25.0 mL of
Standard preparation B to a 250-mL volumetric flask, dilute with water to volume, and mix. This solution (Standard preparation C) contains 1.9 Cg of fluoride ion per mL (10 4 M).
Assay preparation: Transfer to a 250-mL volumetric flask about 100 mg of Stannous Fluoride, accurately weighed. Add 50 mL of water, mix vigorously for 5 minutes, dilute with water to volume, and mix. Transfer 10.0 mL of this solution to a 50-mL volumetric flask, dilute with water to volume, and mix.
Procedure: Pipet 20 mL of each Standard preparation and of the Assay preparation into separate plastic beakers each containing a plastic-coated stirring bar. Pipet 20 mL of Buffer solution into each beaker. Concomitantly measure the potentials, in mV, of the solutions from the Standard preparations and of the solution from the Assay preparation, with a pH meter capable of a minimum reproducibility of ±0.2 mV and equipped with a fluoride-specific ion-indicating electrode and a calomel reference electrode. [NOTE—When taking measurements, immerse the electrodes in the solution, stir on a magnetic stirrer having an insulated top until equilibrium is attained (1 to 2 minutes), and record the potential. Rinse and dry the electrodes between measurements, taking care to avoid damaging the crystal of the specific-ion electrode.] Plot the logarithms of the fluoride-ion concentrations, in Cg per mL, of the Standard preparations versus potential, in mV. From the measured potential of the Assay preparation and the standard reponse line, determine the concentration, C, in Cg per mL, of fluoride ion in the Assay preparation: Calculate the percentage of fluoride (F) in the portion of Stannous Fluoride taken by the formula:
125C / W
in which C is the determined concentration of fluoride, in Cg per mL, in the Assay preparation, and W is the weight, in mg, of Stannous Fluoride taken.

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.

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Last 16 August, 2017

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Stannous Fluoride SDS MSDS Sheet, Material Safety Data Sheet

1. Product Identification

Synonyms: Stannous Fluoride
CAS No.: 7783-47-3
EINECS EC-No.: 231-999-3
Molecular Weight: 156.7
Chemical Formula: SnF2
Recommended usage: Industrial Manufacturing.
Suppliers: As per letterhead.

2. Hazards Identification

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

Acute toxicity, Oral (Category 4) H302
Skin irritation (Category 2) H315
Serious eye damage (Category 1) H318

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

GHS Label Elements
Corrosive
Corrosive

Signal Words: Danger

Hazard statements:
H302: Harmful if swallowed.
H315: Causes skin irritation.
H318: Causes serious eye damage.

Precautionary statements:
P262: Do not get in eyes, on skin, or on clothing.
P264: Wash skin thoroughly after handling.
P270: Do not eat, drink or smoke when using this product.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P330: Rinse mouth
P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P302+P352: IF ON SKIN: Wash with soap and water.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P314: Get Medical advice/attention if you feel unwell.
P330: Rinse mouth.
P332+P313: If skin irritation occurs: Get medical advice/attention.
P362: Take off contaminated clothing and wash before reuse.
P501: Dispose of contents/ container to an approved waste disposal plant.

According to European Directive 67/548/EEC as amended:
Hazard symbol(s): C
R-phrase(s):
R22: Harmful if swallowed.
R38 Irritating to skin.
R41 Risk of serious damage to eyes.
S-phrase(s):
S26: In case of contact with eyes, rinse immediately with plenty of water and
seek medical advice.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S45: In case of accident or if you feel unwell, seek medical advice immediately.

3. Composition/Information on Ingredients

Ingredient: Stannous Fluoride
CAS No.: 7783-47-3
EINECS EC-No.: 231-999-3
Percent: 97 - 100%

4. First Aid Measures

Always seek medical attention after first aid measures are provided.

Inhalation: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.
Ingestion: Never give anything by mouth to an unconscious person. Get medical attention.
Skin Contact: Wipe off excess material from skin then immediately flush skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Get medical attention. Wash clothing before reuse. Thoroughly clean shoes before reuse.
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally. Get medical attention immediately.

5. Fire Fighting Measures

Flammability of the Product: Non-flammable.
Products of Combustion: Hydrogen fluoride gas, Tin oxides.
Fire: Stannous fluoride is not considered to be a fire hazard.
Fire Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Use means suitable for extinguishing surrounding fire.
Special Information: In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full face piece operated in the pressure demand or other positive pressure mode. At high temperatures or when moistened under fire conditions, it may produce toxic or irritating fumes. On decomposition it may emit hydrogen fluoride. Containers may explode on heating

6. Accidental Release Measures

Small Spill: Avoid dust formation. Avoid breathing dust. Ensure adequate ventilation. Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority requirements.
Large Spill: Stannous fluoride is a corrosive solid. Avoid touching the spilled material. Do not let the product enter drains. Use a shovel to put the material into a convenient waste disposal container. Do not contaminate the environment.

7. Handling and Storage

Do not ingest. Do not breathe dust. Wear suitable protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment.
Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Wash hands thoroughly after handling. Provide appropriate exhaust ventilation at places where dust is formed. If you feel unwell, seek medical attention.
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits:
USA ACGIH ACGIH TWA (mg/m³): 2 mg/m³
USA OSHA OSHA PEL (TWA) (mg/m³): 2 mg/m³
Ventilation System: A system of local and/or general exhaust is recommended to keep employee exposures as low as possible. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area.
Personal Respirators (NIOSH Approved): For conditions of use where exposure to dust or mist is apparent and engineering controls are not feasible, a particulate respirator may be worn. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator.
Skin Protection: Wear protective gloves and clean body-covering clothing.
Eye Protection: Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area.
Other Control Measures: Maintain good housekeeping in work area. Dust deposits on floors and other surfaces may pick up moisture and cause the surfaces to become slippery and present safety hazards. Handle in accordance with good industrial hygiene and safety practice. Wash hands after handling.

9. Physical and Chemical Properties

Appearance: Stannous fluoride is white powder.
Odor: It is odorless.
Solubility: It soluble in water.
Molecular Weight: 156.7
Chemical Formula: SnF2
% Volatiles by volume @ 21C (70F): -
Boiling Point: 850°C - lit.
Melting Point: 215°C - dec.
Specific Gravity: 4.57

10. Stability and Reactivity

Stability: Stannous fluoride is stable under ordinary conditions of use and storage.
Hazardous Decomposition Products: It emits toxic fluorine or hydrogen fluoride fumes when heated to decomposition.
Hazardous Polymerization: Will not occur.
Incompatibilities: Strong oxidizing agents, metals & acids. Also incompatible with potassium, Bromine trifluoride, Hydrazine, Ethylene oxide, Metals, organic nitrates sodium, hydrazine, nitromethane, acetylene, sodium hypobromite, alcohols. Halogens..
Conditions to Avoid: Incompatibles and moisture.

11. Toxicological Information

Toxicity data
LD50 Oral - Rat - 360 mg/kg
LD50 Dermal - Rat - > 2,000 mg/kg
Carcinogenic Effects: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC, ACGIH, NTP, OSHA.
Mutagenic Effects: Not available.
Teratogenic Effects: Not available.
Developmental Toxicity: Not available.

12. Ecological Information

Toxicity to fish: Not available
Environmental Fate: Not available.
Environmental Toxicity: It is also toxic to fish. Harmful to aquatic life in very low concentrations.
BOD5 and COD: Not available.
Toxicity of the Products of Biodegradation: The products of degradation are less toxic than the product itself.
This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.

14. Transport Information

DOT (US):
UN number: 2923 Class: 8 (6.1) Packing group: III
Proper shipping name: Corrosive solid, acidic, inorganic, n.o.s. (Stannous fluoride)
Marine pollutant: No
IMDG:
UN number: 2923 Class: 8 (6.1) Packing group: III
Proper shipping name: Corrosive solid, acidic, inorganic, n.o.s. (Stannous fluoride)
Marine pollutant: No
IATA:
UN number: 2923 Class: 8 (6.1) Packing group: III
Proper shipping name: Corrosive solid, acidic, inorganic, n.o.s. (Stannous fluoride)
Marine pollutant: No

15. Regulatory Information

USA:
TSCA
: Not applicable
SARA 302: No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313: This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minims) reporting levels established by SARA Title III, Section 313.
SARA 311/312 Hazards: Acute Health Hazard
California Prop. 65 Components: This product does not contain any chemicals known to State of California to cause cancer, birth defects, or any other reproductive harm.

Canada WHMIS Classification: Class E - Corrosive Material, D1A Very toxic materials

HMIS (Perceived): Health hazard: 3, Flammability: 0, Physical hazards: 0
NFPA (Perceived): Health hazard: 3, Flammability: 0, Physical hazards: 0

16. Other Information

EINECS EC-No.: 231-999-3
H302: Harmful if swallowed.
H315: Causes skin irritation.
H318: Causes serious eye damage.
C = Corrosive
Xn = Harmful
R22: Harmful if swallowed.
R38 Irritating to skin.
R41 Risk of serious damage to eyes.

DISCLAIMER: The information and recommendations set forth herein (hereinafter "Information") are presented in good faith and believed correct as of the date hereof. It is compiled from various sources and it is not necessarily all inclusive nor fully adequate in every circumstance. In addition, these suggestions should not be confused with nor followed in violation of applicable laws, regulations, rules or insurance requirements applicable. This MSDS sheet is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose.