Germanium Sulfide

CAS 12025-32-0
Linear Formula: GeS
MDL Number: MFCD00135539
EC No.: 234-704-6

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(5N) 99.999% Germanium Sulfide Ingot
GE-S-05-I Pricing
(5N) 99.999% Germanium Sulfide Lump
GE-S-05-L Pricing
(5N) 99.999% Germanium Sulfide Powder
GE-S-05-P Pricing
(5N) 99.999% Germanium Sulfide Sputtering Target
GE-S-05-ST Pricing


Compound Formula GeS
Molecular Weight 104.71
Appearance Solid
Melting Point 615 °C (1,139 °F)
Boiling Point N/A
Density N/A
Monoisotopic Mass 105.89325 Da
Exact Mass 105.893249

Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A

View and Print SDS


Date Accessed: 10/01/2016
Date Revised: 05/15/2015


Product Name: Germanium Sulfide

Product Number: All applicable American Elements product codes, e.g. GE-S-05-I , GE-S-05-L , GE-S-05-P , GE-S-05-ST

CAS #: 12025-32-0

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
1093 Broxton Ave. Suite 2000
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America +1 800-424-9300
International +1 703-527-3887


Classification of the substance or mixture
Not a hazardous substance or mixture.
GHS Label elements, including precautionary statements
Not a hazardous substance or mixture.
Hazards not otherwise classified (HNOC) or not covered by GHS-none


Chemical characterization: Product does not burn
Formula: GeS
Molecular Weight: 104.71 g/mol
CAS-No.: 12025-32-0
EC-No.: 234-704-6
No ingredients are hazardous according to OSHA criteria.
No components need to be disclosed according to the applicable regulations.


Description of first aid measures
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration.
In case of skin contact
Wash off with soap and plenty of water.
In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11
Indication of any immediate medical attention and special treatment needed
no data available


Extinguishing media
Suitable extinguishing media
Use extinguishing measures that are appropriate to local circumstances and the surrounding environment.
Special hazards arising from the substance or mixture
Sulphur oxides, Germanium oxides
Advice for firefighters
Wear self contained breathing apparatus for fire fighting if necessary.
Further information
The product itself does not burn.


Personal precautions, protective equipment and emergency procedures
Avoid dust formation. Avoid breathing vapours, mist or gas.
For personal protection see section 8.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Sweep up and shovel. Keep in suitable, closed containers for disposal.
Reference to other sections
For disposal see section 13.


Precautions for safe handling
Provide appropriate exhaust ventilation at places where dust is formed.
For precautions see section 2.
Conditions for safe storage, including any incompatibilities
Keep container tightly closed in a dry and well-ventilated place.
Specific end use(s)
Apart from the uses mentioned in section 1 no other specific uses are stipulated


Control parameters
Components with workplace control parameters
Contains no substances with occupational exposure limit values.
Exposure controls
Appropriate engineering controls
General industrial hygiene practice.
Personal protective equipment
Eye/face protection
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
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.
Body Protection
Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place., The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection
Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
Do not let product enter drains.


Information on basic physical and chemical properties
Form: solid
no data available
Odour Threshold
no data available
no data available
Melting point/freezing point
Melting point/range: 615 °C (1,139 °F)
Initial boiling point and boiling range
no data available
Flash point
not applicable
Evapouration rate
no data available
Flammability (solid, gas)
no data available
Upper/lower flammability or explosive limits
no data available
Vapour pressure
no data available
Vapour density
no data available
Relative density
no data available
Water solubility
no data available
Partition coefficient: n-octanol/water
no data available
Auto-ignition temperature
no data available
Decomposition temperature
no data available
no data available
Explosive properties
no data available
Oxidizing properties
no data available
Other safety information
no data available


no data available
Chemical stability
Stable under recommended storage conditions.
Possibility of hazardous reactions
no data available
Conditions to avoid
no data available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
Other decomposition products-no data available
In the event of fire: see section 5


Information on toxicological effects
Acute toxicity
no data available
Inhalation: no data available
Dermal: no data available
no data available
Skin corrosion/irritation
no data available
Serious eye damage/eye irritation
no data available
Respiratory or skin sensitisation
no data available
Germ cell mutagenicity
no data available
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.
No component of this product present at levels greater than or equal to 0.1% is identified as a
carcinogen or potential carcinogen by ACGIH.
No component of this product present at levels greater than or equal to 0.1% is identified as a
known or anticipated carcinogen by NTP.
No component of this product present at levels greater than or equal to 0.1% is identified as a
carcinogen or potential carcinogen by OSHA.
Reproductive toxicity
no data available
no data available
Specific target organ toxicity -single exposure
no data available
Specific target organ toxicity -repeated exposure
no data available
Aspiration hazard
no data available
Additional Information
RTECS: Not available


no data available
Persistence and degradability
no data available
Bioaccumulative potential
no data available
Mobility in soil
no data available
Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
Other adverse effects
no data available


Waste treatment methods
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contaminated packaging
Dispose of as unused product.


Not dangerous goods
Not dangerous goods
Not dangerous goods


SARA 302 Components
SARA 302: No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
SARA 313 Components
SARA 313: This material does not contain any chemical components with known CAS numbers that exceed the threshold (De Minimis) reporting levels established by SARA Title III, Section 313.
SARA 311/312 Hazards
No SARA Hazards
Massachusetts Right To Know Components
No components are subject to the Massachusetts Right to Know Act.
Pennsylvania Right To Know Components
Germanium sulphide
New Jersey Right To Know
Germanium sulphide
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.


Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). 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. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2016 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.


Germanium Sulfide is a crystalline solid used as a semiconductor and in photo optic applications. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.


Thioxo-λ2-germane, sulfanylidenegermanium, thioxogermanium, Germanium monosulfide, Germanium(II) sulfide

Chemical Identifiers

Linear Formula GeS
CAS 12025-32-0
Pubchem CID 6367215
MDL Number MFCD00135539
EC No. 234-704-6
Beilstein Registry No. N/A
IUPAC Name sulfanylidenegermanium
InchI Identifier InChI=1S/GeS/c1-2

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Products & Element Information


See more Germanium products. Germanium (atomic symbol: Ge, atomic number: 32) is a Block P, Group 14, Period 4 element with an atomic weight of 72.63. Germanium Bohr ModelThe number of electrons in each of germanium's shells is 2, 8, 18, 4 and its electron configuration is [Ar] 3d10 4s2 4p2. The germanium atom has a radius of 122.5 pm and a Van der Waals radius of 211 pm. Germanium was first discovered by Clemens Winkler in 1886. In its elemental form, germanium is a brittle grayish white semi-metallic element. Germanium is too reactive to be found naturally on Earth in its native state. High Purity (99.999%) Germanium (Ge) MetalIt is commercially obtained from zinc ores and certain coals. It is also found in argyrodite and germanite. It is used extensively as a semiconductor in transitors, solar cells, and optical materials. Other applications include acting an alloying agent, as a phosphor in fluorescent lamps, and as a catalyst. The name Germanium originates from the Latin word "Germania" meaning "Germany," For more information on germanium, including properties, safety data, research, and American Elements' catalog of germanium products, visit the Germanium element page.


See more Sulfur products. Sulfur (or Sulphur) (atomic symbol: S, atomic number: 16) is a Block P, Group 16, Period 3 element with an atomic radius of 32.066. Sulfur Bohr ModelThe number of electrons in each of Sulfur's shells is 2, 8, 6 and its electron configuration is [Ne] 3s2 3p4. In its elemental form, sulfur has a light yellow appearance. The sulfur atom has a covalent radius of 105 pm and a Van der Waals radius of 180 pm. In nature, sulfur can be found in hot springs, meteorites, volcanoes, and as galena, gypsum, and epsom salts. Sulfur has been known since ancient times but was not accepted as an element until 1777, when Antoine Lavoisier helped to convince the scientific community that it was an element and not a compound.

Recent Research

New structures of bilayer germanium nanosheets predicted by a particle swarm optimization method., Li, Dongdong, Li Pengfei, Qu Bingyan, Pan B C., Zhang B, He H Y., and Zhou Rulong , Nanoscale, 2016 Sep 28, Volume 8, Issue 36, p.16467-74, (2016)

Germanium-on-silicon mid-infrared grating couplers with low-reflectivity inverse taper excitation., Alonso-Ramos, Carlos, Nedeljkovic Milos, Benedikovic Daniel, Penades Jordi Soler, Littlejohns Callum G., Khokhar Ali Z., Pérez-Galacho Diego, Vivien Laurent, Cheben Pavel, and Mashanovich Goran Z. , Opt Lett, 2016 Sep 15, Volume 41, Issue 18, p.4324-7, (2016)

An improved matrix separation method for characterization of ultrapure germanium (8N)., Reddy, M A., Shekhar R, and Kumar Sunil Jai , Talanta, 2016 Oct 1, Volume 159, p.14-22, (2016)

Electrolytic Formation of Crystalline Silicon/Germanium Alloy Nanotubes and Hollow Particles with Enhanced Lithium-Storage Properties., Xiao, Wei, Zhou Jing, Yu Le, Wang Dihua, and Lou Xiong Wen David , Angew Chem Int Ed Engl, 2016 May 9, (2016)

Synthesis, Electronic Structure and Reactivity Studies of a 4-coordinate Square Planar Germanium(IV) Cation., Fang, Huayi, Jing Huize, Zhang Aixi, Ge Haonan, Yao Zhengmin, Brothers Penelope J., and Fu Xuefeng , J Am Chem Soc, 2016 May 31, (2016)

The Preparation of Complexes of Germanone from a Germanium μ-Oxo Dimer., Sinhababu, Soumen, Yadav Dhirendra, Karwasara Surendar, Sharma Mahendra Kumar, Mukherjee Goutam, Rajaraman Gopalan, and Nagendran Selvarajan , Angew Chem Int Ed Engl, 2016 May 30, (2016)

K- and L-edge X-ray absorption spectrum calculations of closed-shell carbon, silicon, germanium, and sulfur compounds using damped four-component density functional response theory., Fransson, Thomas, Burdakova Daria, and Norman Patrick , Phys Chem Chem Phys, 2016 May 21, Volume 18, Issue 19, p.13591-603, (2016)

Germanium Dumbbells in a New Superconducting Modification of BaGe3., Castillo, Rodrigo, Baranov Alexey I., Burkhardt Ulrich, Cardoso-Gil Raul, Schnelle Walter, Bobnar Matej, and Schwarz Ulrich , Inorg Chem, 2016 May 2, Volume 55, Issue 9, p.4498-503, (2016)

High speed and high power polarization insensitive germanium photodetector with lumped structure., Chen, Guanyu, Yu Yu, Xiao Xi, and Zhang Xinliang , Opt Express, 2016 May 2, Volume 24, Issue 9, p.10030-9, (2016)

Simulation of germanium nanobeam electro-optical 2 × 2 switches and 1 × 1 modulators for the 2 to 5 µm infrared region., Soref, Richard, Hendrickson Joshua R., and Sweet Julian , Opt Express, 2016 May 2, Volume 24, Issue 9, p.9369-82, (2016)

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