Potassium hydrogen fluoride F2HK Properties,Formula,Price, Uses

What is Potassium hydrogen fluoride

Potassium hydrogen fluoride (KHF₂) is a versatile inorganic compound widely used in various industrial and chemical applications. It is a white, crystalline solid that is highly soluble in water, making it an effective reagent in processes such as glass etching, metal surface treatment, and aluminum production. KHF₂ is particularly valued for its ability to generate hydrofluoric acid in situ, which is essential for cleaning and etching operations. Additionally, it serves as a key component in the production of fluorine-containing compounds and as a flux in metallurgy. Due to its reactivity and corrosive nature, proper handling and safety precautions are essential when working with this compound.

Preparation Process: Potassium hydrogen fluoride (KHF₂) is prepared by neutralizing potassium hydroxide (KOH) or potassium carbonate (K₂CO₃) with hydrofluoric acid (HF). In a typical procedure, a 40% aqueous HF solution is slowly added to a cooled solution of KOH or K₂CO₃ in a plastic or PTFE container to avoid corrosion. The reaction is exothermic, requiring temperature control below 30°C. The resulting solution is evaporated to crystallize KHF₂, which is then filtered and dried at 100°C. Alternatively, equimolar amounts of potassium fluoride (KF) and HF can be dissolved in water, followed by evaporation and crystallization. Handling requires strict safety measures due to HF's toxicity.

Usage Scenarios: Potassium hydrogen fluoride (KHF₂) is primarily used as a flux in metallurgy, particularly for aluminum and titanium refining, to lower melting points and remove oxides. It serves as an etchant for glass and silicon in the electronics industry, creating precise microstructures. In organic chemistry, it fluorinates compounds by releasing hydrogen fluoride. The compound is also employed in metal surface treatments to improve adhesion and corrosion resistance. Additionally, KHF₂ is used in the production of fluorine gas through electrolysis. Its buffering properties make it useful in specific chemical processes requiring controlled pH levels. Safety precautions are essential due to its toxicity and corrosiveness.

Potassium hydrogen fluoride Basic Info

Chemical Name Potassium hydrogen fluoride

Synonyms POTASSIUM BIFLUORIDE;POTASSIUM HYDROGEN DIFLUORIDE;K(HF2);NA 1811;en difL;Potassium hydrog;Potassium hydrogen f;Kaliumhydrogenfluorid;bifluoruredepotassium;potassiumacidfluoride

CAS No. 7789-29-9

Molecular Formula F2HK

Molecular Weight 78.1

PSA 0.00000

LogP -2.46330

Safely Info

RTECS TS6650000

Hazard Class 8

Safety Statements 26-36/37/39-45-37-22

HS Code 28261990

WGK Germany 2

Packing Group II

RIDADR UN 3421 8/PG 2

Risk Statements 25-34

Hazard Codes T,C

Caution Statement P260-P280-P301+P310+P330-P301+P330+P331-P303+P361+P353-P305+P351+P338+P310

Hazard Declaration H301-H314

Symbol GHS05,GHS06

Signal Word Danger

Potassium hydrogen fluoride Price

United States: $20-40/kg
China: $15-30/kg
Russia: $25-45/kg
Germany: $30-50/kg
India: $12-25/kg
Japan: $35-55/kg
Brazil: $18-35/kg
South Korea: $22-40/kg
Philippines: $20-35/kg
United Kingdom: $30-50/kg
France: $25-45/kg
Mexico: $10-20/kg
Canada: $30-50/kg
South Africa: $15-30/kg
Egypt: $20-40/kg
Turkey: $25-45/kg
Thailand: $18-35/kg
Indonesia: $20-40/kg

MSDS

Name:	Potassium hydrogen fluoride 99+% Material Safety Data Sheet
Synonym:	Potassium bifluoride; Potassium acid fluoride
CAS:	7789-29-9

Section 1 - Chemical Product MSDS Name:Potassium hydrogen fluoride 99+% Material Safety Data Sheet
Synonym:Potassium bifluoride; Potassium acid fluoride

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
7789-29-9	Potassium hydrogen fluoride	> 99	232-156-2

Hazard Symbols: T C
Risk Phrases: 25 34

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Toxic if swallowed. Causes burns.Hygroscopic (absorbs moisture from the air).
Potential Health Effects
Eye:
Causes eye burns.
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. Ingestion of large amounts of potassium ion may cause lowered blood pressure, coma, and death. Ingestion of large amounts of fluoride may cause salivation, nausea, vomiting, abdominal pain, fever, labored breathing.
Inhalation:
Causes chemical burns to the respiratory tract. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema. Prolonged exposure to dusts, vapors, or mists may result in the perforation of the nasal septum.
Chronic:
Chronic inhalation and ingestion may cause chronic fluoride poisoning (fluorosis) characterized by weight loss, weakness, anemia, brittle bones, and stiff joints.

Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.

Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Provide ventilation.

Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not store in glass.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 7789-29-9: United Kingdom, WEL - TWA: (listed as fluorides, inorganic): 2.5 mg/m3 TWA (as F) United Kingdom, WEL - STEL: (listed as fluorides, inorganic): 6.2 mg/m3 STEL (as F) United States OSHA: 2.5 mg/m3 TWA (as F) (listed under Fluorides).2.5 mg/m3 TWA (as F) (listed under Fluorides).
Belgium - TWA: (listed as fluorides, inorganic): 2.5 mg/m3 VLE (a France - VME: (listed as fluorides): 2.5 mg/m3 VME (as F) Germany: (listed as fluorides): 2.5 mg/m3 VME (as F) Malaysia: (listed as fluorides): 2.5 mg/m3 TWA (as F) Netherlands: (listed as fluorides): 3.5 mg/m3 STEL (as F) Spain: (listed as fluorides, inorganic): 2.5 mg/m3 VLA-ED (except uranium hexafluoride, as F) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Crystals
Color: white
Odor: Odorless
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 239 deg C
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: 39G/100ML WATER (20C)
Specific Gravity/Density: 2.370
Molecular Formula: HF2K
Molecular Weight: 78.10

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable.
Conditions to Avoid:
Moisture, excess heat.
Incompatibilities with Other Materials:
Strong acids - bases - glass.
Hazardous Decomposition Products:
Hydrogen fluoride gas, oxides of potassium.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7789-29-9: TS6650000 LD50/LC50:
Not available.
Carcinogenicity:
Potassium hydrogen fluoride - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION

Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION

IATA
Shipping Name: POTASSIUM HYDROGENDIFLUORIDE, SOLID
Hazard Class: 8 (6.1)
UN Number: 1811
Packing Group: II
IMO
Shipping Name: POTASSIUM HYDROGENDIFLUORIDE, SOLID
Hazard Class: 8 (6.1)
UN Number: 1811
Packing Group: II
RID/ADR
Shipping Name: POTASSIUM HYDROGENDIFLUORIDE
Hazard Class: 8
UN Number: 1811
Packing group: II

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T C
Risk Phrases:
R 25 Toxic if swallowed.
R 34 Causes burns.
Safety Phrases:
S 22 Do not breathe dust.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 7789-29-9: 1
Canada
CAS# 7789-29-9 is listed on Canada's DSL List.
CAS# 7789-29-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7789-29-9 is listed on the TSCA inventory.

SECTION 16 - ADDITIONAL INFORMATION
N/A

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1.Identification

1.1 GHS Product identifier

Product name	Potassium hydrogen fluoride

1.2 Other means of identification

Product number	-
Other names	Potassiumhydrofluoride

1.3 Recommended use of the chemical and restrictions on use

Identified uses	For industry use only.
Uses advised against	no data available

1.4 Supplier's details

Company	MOLBASE (Shanghai) Biotechnology Co., Ltd.
Address	Floor 4 & 5, Building 12, No. 1001 North Qinzhou Road, Xuhui District, Shanghai, China
Telephone	+86(21)64956998
Fax	+86(21)54365166

1.5 Emergency phone number

Emergency phone number	+86-400-6021-666
Service hours	Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1 Classification of the substance or mixture

Acute toxicity - Oral, Category 3

Skin corrosion, Category 1B

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word	Danger
Hazard statement(s)	H301 Toxic if swallowed H314 Causes severe skin burns and eye damage
Precautionary statement(s)
Prevention	P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection.
Response	P301+P310 IF SWALLOWED: Immediately call a POISON CENTER/doctor/… P321 Specific treatment (see ... on this label). P330 Rinse mouth. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower]. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P310 Immediately call a POISON CENTER/doctor/… P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage	P405 Store locked up.
Disposal	P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

3.Composition/information on ingredients

3.1 Substances

Chemical name	Common names and synonyms	CAS number	EC number	Concentration
Potassium hydrogen fluoride	Potassium hydrogen fluoride	7789-29-9	none	100%

4.First-aid measures

4.1 Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.

In case of skin contact

Wash off with soap and plenty of water. Consult a physician.

In case of eye contact

Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.

If swallowed

Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

4.2 Most important symptoms/effects, acute and delayed

no data available

4.3 Indication of immediate medical attention and special treatment needed, if necessary

no data available

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

5.2 Specific hazards arising from the chemical

no data available

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2 Environmental precautions

Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.

6.3 Methods and materials for containment and cleaning up

Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

7.Handling and storage

7.1 Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2 Conditions for safe storage, including any incompatibilities

Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2 Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state	A white, odorless crystalline powder
Colour	no data available
Odour	no data available
Melting point/ freezing point	239ºC
Boiling point or initial boiling point and boiling range	19.5ºC at 760 mmHg
Flammability	no data available
Lower and upper explosion limit / flammability limit	no data available
Flash point	no data available
Auto-ignition temperature	no data available
Decomposition temperature	no data available
pH	no data available
Kinematic viscosity	no data available
Solubility	In water:39 g/100 mL (20 ºC)
Partition coefficient n-octanol/water (log value)	no data available
Vapour pressure	no data available
Density and/or relative density	2.37g/mLat 25°C(lit.)
Relative vapour density	no data available
Particle characteristics	no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Stable under recommended storage conditions.

10.3 Possibility of hazardous reactions

no data available

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

no data available

10.6 Hazardous decomposition products

no data available

11.Toxicological information

Acute toxicity

Oral: no data available
Inhalation: no data available
Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available

Carcinogenicity

no data available

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 Toxicity

Toxicity to fish: no data available
Toxicity to daphnia and other aquatic invertebrates: no data available
Toxicity to algae: no data available
Toxicity to microorganisms: no data available

12.2 Persistence and degradability

no data available

12.3 Bioaccumulative potential

no data available

12.4 Mobility in soil

no data available

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods

Product

The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

14.Transport information

14.1 UN Number

ADR/RID: UN1811

IMDG: UN1811

IATA: UN1811

14.2 UN Proper Shipping Name

ADR/RID: POTASSIUM HYDROGEN DIFLUORIDE SOLID

IMDG: POTASSIUM HYDROGEN DIFLUORIDE SOLID

IATA: POTASSIUM HYDROGEN DIFLUORIDE SOLID

14.3 Transport hazard class(es)

ADR/RID: 8

IMDG: 8

IATA: 8

14.4 Packing group, if applicable

ADR/RID: III

IMDG: III

IATA: III

14.5 Environmental hazards

ADR/RID: no

IMDG: no

IATA: no

14.6 Special precautions for user

no data available

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1 Safety, health and environmental regulations specific for the product in question

Chemical name	Common names and synonyms	CAS number	EC number
Potassium hydrogen fluoride	Potassium hydrogen fluoride	7789-29-9	none
European Inventory of Existing Commercial Chemical Substances (EINECS)			Listed.
EC Inventory			Listed.
United States Toxic Substances Control Act (TSCA) Inventory			Listed.
China Catalog of Hazardous chemicals 2015			Listed.
New Zealand Inventory of Chemicals (NZIoC)			Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS)			Listed.
Vietnam National Chemical Inventory			Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC)			Listed.

16.Other information

Information on revision

Creation Date	Aug 17, 2017
Revision Date	Aug 17, 2017

Abbreviations and acronyms

CAS: Chemical Abstracts Service
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
IMDG: International Maritime Dangerous Goods
IATA: International Air Transportation Association
TWA: Time Weighted Average
STEL: Short term exposure limit
LC50: Lethal Concentration 50%
LD50: Lethal Dose 50%
EC50: Effective Concentration 50%

References

IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
ECHA - European Chemicals Agency, website: https://echa.europa.eu/

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.

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Business Type

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Details

Shaanxi Dideu Medichem Co. Ltd

China Shaanxi Xi'an

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Zhejiang Hailan Chemical Group Co.,Ltd (Formerly Quzhou Lide Industry Co., Ltd.)

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Potassium hydrogen fluoride

What is Potassium hydrogen fluoride

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Safely Info

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MSDS

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