American Molecules - Ammol.org USA

Ammonium Silicofluoride or Ammonium Fluorosilicate or Cryptohalite or Ammonium Hexafluorosilicate Supplier Exporter Manufacturers' Representative

Call Toll Free +1-855-552-6665
Toll Free: 1-855-55-AMMOL

Ammonium Silicofluoride or Ammonium Fluorosilicate or Cryptohalite or Ammonium Hexafluorosilicate
CAS Number: 16919-19-0

Molecular Formula: (NH4)2SiF6
Molecular Weight: 178.14

Ammonium Silicofluoride or Ammonium Fluosilicate Suppliers
Ammonium Silicofluoride or Ammonium Fluor0silicate or Cryptohalite or Ammonium Hexafluorosilicate

Ammonium silicofluoride or Cryptohalite or Ammonium hexafluorosilicate or Ammonium fluosilicate SDS, Safety Data Sheet
MSDS, Material Safety Data Sheet
 05-Feb-26

1. Product Identification

Product Name & Other Names: Sodium Silico Fluoride or Sodium Silicofluoride or Sodium hexafluorosilicate or Sodium fluorosilicate.
CAS No.: 16919-19-0
EINECS Number: 240-968-3
Molecular Weight: 178.14
Chemical Formula: (NH4)2SiF6
Relevant uses and uses advised against (if any): Laboratory Chemicals and Industrial Use only.
Supplier: American Molecules, 9910 Bent Oak Dr, Houston, TX 77040, USA.
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665.
In case of emergency contact: Will be given with the supply.

2. Hazards Identification

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

Acute oral toxicity Category 3 H301
Acute toxicity, Dermal (Category 3) H311
Acute toxicity, Inhalation (Category 3) H331

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

GHS Label Elements
Toxic
Toxic

Signal Word: Danger

Hazard statements:
H301+H311+H331: Toxic if swallowed, if inhaled or in contact with skin.

Precautionary statements:
P202: Do not handle until all safety precautions have been read and understood.
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.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P330: Rinse mouth.
P301+312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P302+P352: IF ON SKIN: Wash with plenty of soap and water.
P303+P361+P353: IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P332+313: If skin irritation occurs: Get medical advice/attention.
P337+313: If eye irritation persists get medical advice/attention.
P405: Store locked up.
P501: Dispose of contents/container to authorized agents only.

3. Composition/Information on Ingredients

Product Name & Other Names: Sodium Silico Fluoride or Sodium Silicofluoride or Sodium hexafluorosilicate or Sodium fluorosilicate.
CAS No.: 16919-19-0
EINECS Number: 240-968-3

4. First Aid Measures

Always seek medical attention after first aid measures are provided.

Inhalation: If inhaled, remove to fresh air. If breathing is difficult, give oxygen. Get medical attention.
Ingestion: Give large amounts of water to drink. Never give anything by mouth to an unconscious person. Get medical attention.
Skin Contact: In case of contact, immediately flush skin with plenty of water. Cover the irritated skin with an emollient. Remove contaminated clothing and shoes. Cold water may be used. Wash clothing & Shoes before reuse. Get medical attention.br> Eye Contact: Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. Get medical attention.
Notes to Physician: Treat symptomatically.

5. Fire Fighting Measures

Fire: Not combustible. Decomposes on heating emitting toxic fumes.
Fire Extinguishing Media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide. Use means suitable for extinguishing surrounding fire. Avoid heavy water stream. Cool containers with water spray until well after fire is out. Avoid getting water inside containers.
Decomposition Products: Fumes, hydrogen fluoride along with nitrogen oxides, silicon oxides.
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 under fire conditions, it may produce toxic or irritating fumes. Fire-extinguishing work is done from the windward and the suitable fire-extinguishing method according to the surrounding situation is used. Uninvolved persons should evacuate to a safe place.

6. Accidental Release Measures

Personal precautions, protective equipment, and emergency procedures: Avoid breathing dust/fumes/gas/mist/vapors/spray. Use individual protective equipment (waterproof boots, suitable protective clothing, safety glasses, etc.). Restrict unprotected personnel from the area. Prevent any contact with hot surfaces. Do not approach facing the wind. Do not touch the spilled material.
Environmental precautions: Do not let the product enter drains, soil, or water sources.
Methods and materials used for containment Cleanup procedures and Storage:
Small Spill: 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 legal requirements.
Large Spill: Wear respiratory protection. Avoid breathing vapors, mist, or gas. Ensure adequate ventilation. Keep people away from and upwind of spill/leak. Evacuate personnel to safe areas. Pick up and arrange disposal without creating dust. Contain spilled material. Cover with an inert, non-combustible absorbent material, (e.g. sand, earth, diatomaceous earth, vermiculite). Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and allow to evacuate as per law.

7. Handling and Storage

Do not breathe vapors/dust/mist. Do not get in eyes, on skin, or on clothing. Avoid dust formation. Do not ingest.
Precautions for safe handling: Apply according to good manufacturing and industrial hygiene practices. Ensure proper ventilation. In case of insufficient ventilation, wear suitable respiratory equipment. Wash thoroughly after handling. Do not drink, eat, or smoke while handling. Avoid contact with skin, eyes, and clothing. Minimize dust generation. Avoid breathing dust/fumes/gas/mist/vapors/spray. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use individual protective equipment (waterproof boots, suitable protective clothing, safety glasses, etc.). Prevent any contact with hot surfaces.
Conditions for safe storage, including any incompatibilities: Store in cool, dry, and ventilated area away from heat sources and protected from sunlight in tightly closed original container. Keep air contact to a minimum. Store protected from heat, sparks and ignition sources and incompatible materials. Avoid contact with skin and eyes. Avoid inhalation of dust/mist/vapor. Do not store with incompatible materials like strong oxidizing agents, acid, and bases.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits:
USA-OSHA PEL: (Vacated) TWA 2.5 mg/m3 (as F) (listed under Fluorides)
USA-NIOSH: TWA 2.5 mg/m3 (as F) (listed under Fluorides)
Engineering Controls: Showers, Eyewash stations, Ventilation systems.
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: White crystals or powder.
Odor: Odorless.
Odor threshold: Not available.
pH: Not available.
Relative density: about 2
Melting Point: 100C.
Initial boiling point and boiling range: Not available.
Flash point: Not available.
Auto-ignition temperature: Not available.
Decomposition temperature: Not available.
Upper/lower flammability or explosive limits: Not available.
Vapor pressure: Not available.
Vapor density: Not available.
Evaporation rate: Not available.
Flammability (solid, gas): Not available.
Partition coefficient: n-octanol/water: Not available.
Solubility: Soluble in water and alcohol.
Viscosity: Not available.
Molecular Weight: 178.14
Chemical Formula: (NH4)2SiF6

10. Stability and Reactivity

Stability: Stable under ordinary conditions of use and storage. Reacts with (some) acids: release of toxic and corrosive gases/vapors (hydrofluoric acid).
Hazardous Decomposition Products: Fumes, hydrogen fluoride along with nitrogen oxides, silicon oxides may be released.
Hazardous Polymerization: Will not occur.
Incompatibilities: Strong oxidants, acid, and bases. Cannot be stored in ceramic and glass bottles.
Conditions to Avoid: Heat, Direct sunlight, Moisture, and Incompatibles. Contact with strong acids liberates hydrogen fluoride. Always avoid Strong acids-reacts, Strong alkalis-reacts, Oxidizing agents-reacts, Metals-reacts.

11. Toxicological Information

Acute toxicity: Toxic in contact with skin. Toxic if inhaled. Toxic if swallowed.
LD50 Oral - Rat: 100 mg/kg.
LD50 Oral - Mouse: 70 mg/kg.
Carcinogenicity: Not classifiable as to its carcinogenicity to humans by IARC, ACGIH, NTP, or EPA.
Reproductive toxicity: No information found.
Developmental Effects: No information found.
Teratogenicity: No information found.

12. Ecological Information

Toxicity to fish:
LC50 25.8 mg/L, 96h static (Pimephales promelas).
EC50, Daphnia (Daphnia magna): 35.4 mg/L.
Persistence and Degradability: Soluble in water Persistence is unlikely.
Mobility: Will likely be mobile in the environment due to its water solubility.
Results of PBT and vPvB assessment: Not available.

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 USA, TDG Canada & ADR/RID Europe:
UN number: 2854, Class: 6.1, Packing group: III.
Proper shipping name: Ammonium fluorosilicate
IMDG/IMO & IATA/ICAO:
UN number: 2854, Class: 6.1, Packing group: III.
Proper shipping name: Ammonium fluorosilicate

15. Regulatory Information

USA:
SARA 311/312 Hazard Categories
: Acute Health Hazard, Chronic Health Hazard. See section 2.
California Proposition 65: This product does not contain Proposition 65 chemicals.

Section 16 - Additional Information

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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American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.

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Suppliers and Manufacturers' Representative:
American Molecules - Ammol.org USA
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
Email: info@ammol.org

5 February, 2026