Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 231-818-8 | CAS number: 7757-79-1
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: handbook
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.
- GLP compliance:
- not specified
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- other: rhombohedral crystals
- Form:
- powder
- Colour:
- colourless
- Odour:
- other: not mentioned in the handbook
- Substance type:
- inorganic
- Conclusions:
- The CRC Handbook of Chemistry and Physics (80th ed.) describes potassium nitrate as colourless, rhombohedral crystals or powder.
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: handbook
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Handbook data are considered from a trusted source. Data have been taken from many sources, including both compilations and the primary literature - where conflicts were found, the value deemed most reliable was chosen. The reference was peer-reviewed. In addition, the reference sources are indicated although not leading to sufficient information on the material & method used.
- GLP compliance:
- not specified
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- powder
- Form:
- other: prisms
- Colour:
- colorless transparent prisms, white granular or crystalline powder
- Odour:
- other: no data
- Substance type:
- inorganic
- Conclusions:
- The Merck Index (12th ed.) describes potassium nitrate as colourless transparent prisms or a white granular or crystalline powder.
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: handbook
- Adequacy of study:
- weight of evidence
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: The preface and introduction to this book (9th Edition) provide no indication that the physico-chemical data has been ‘peer reviewed’. The reference source is not indicated leading to insufficient information on the material & method used.
- Qualifier:
- no guideline required
- GLP compliance:
- not specified
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- powder
- Form:
- other: or orthorhombic crystals
- Colour:
- Transparent colorless or white
- Odour:
- odourless
- Substance type:
- inorganic
- Conclusions:
- Sax's Dangerous Properties of Industrial Materials (9th. ed.) describes potasium nitrate as transparent, colourless or white crystalline powder or orthorhombic crystals.
Referenceopen allclose all
Description of key information
Combining three handbook results, potassium nitrate could be described as a colourless crystalline solid or a white crystalline or granular powder.
Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- solid
Additional information
-The CRC Handbook of Chemistry and Physics (80th ed.) describes potassium nitrate as colourless, rhombohedral crystals or powder.
-The Merck Index (12th ed.) describes potassium nitrate as colourless transparent prisms or a white granular or crystalline powder.
-Sax's Dangerous Properties of Industrial Materials (9th. ed.) describes potasium nitrate as transparent, colourless or white crystalline powder or orthorhombic crystals.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
