Note: Ingredients listed on restricted chemical lists
EC/CAS
1310-58-3
Name of the chemical
Potassium or sodium hydroxide (20) Potassium hydroxide (21)
Concentration
<0.1
General Information
Version
2.0
Revision date
2026-01-14
Product name
HumiSource Plus
Chemical name
Soluble Humic Acid Concentrate
1.2.2. Uses advised against
Do not mix with ammonium sulfate or calcium nitrate
Manufacturer Name
Leonardite Products, LLC
Emergency telephone
+1 (701)-770-5569, +1 (406)-970-6889
Icons in SDS
Company Information
company name
Leonardite Products, LLC
e-mail address of the competent person responsible for the Safety Data Sheet
Source@leonarditeproducts.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H290, H314, H318
Hazard statements
Code
Statements
H290
May be corrosive to metals
Section 2
SECTION 2: Hazards identification
Classiication of Substance/Mixture
Physical hazards
Skin Corrosion 1A H314 Corrosive to Metals 1 H290 Eye Damage 1 H318
Signal word
Danger
Hazard statements
H314 – Causes severe skin burns and eye damage. H318 – Causes serious eye damage. H290 – May be corrosive to metals.
Prevention
P260 – Do not breathe mist/vapors/spray. P264 – Wash hands and exposed skin thoroughly after handling. P270 – Do not eat, drink, or smoke when using this product. P273 – Avoid release to the environment. P280 – Wear protective gloves/protective clothing/eye protection/face protection.
Response
P301 + P330 + P331 – IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. 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 person to fresh air and keep 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. P310 – Immediately call a POISON CENTER or doctor/physician. P312 – Call a doctor if you feel unwell. P308+P313 – If exposed or concerned: Get medical advice/attention. P321 – Speciic treatment (see Section 4) P363 – Wash contaminated clothing before reuse.
Storage
P405 – Store locked up. P406 – Store in a corrosion-resistant container with a resistant inner liner. P403 + P233 – Keep container tightly closed.
Disposal
P501 – Dispose of contents/container in accordance with local/regional/ national/international regulations.
2.3 Other hazards
None known.
Ingredient(s) with unknown acute toxicity
None known.
2.1 Classification of the substance or mixture
Hazard Communication. Health Hazards Physical Hazards Skin Corrosion 1A H314 Corrosive to Metals 1 H290 Eye Damage 1 H318 2.2 Label Elements
