Note: Ingredients listed on restricted chemical lists
EC/CAS
7631-86-9
Name of the chemical
Silver adsorbed on silicon dioxide
Concentration
5-50 1-10
EC/CAS
14808-60-7
Name of the chemical
Silica, crystalline
Concentration
<0.1-1
EC/CAS
1305-78-8
Name of the chemical
Calcium oxide
Concentration
30-70
EC/CAS
1310-58-3
Name of the chemical
potassium hydroxide
Concentration
<10-30
EC/CAS
1310-73-2
Name of the chemical
sodium hydroxide
Concentration
<1-5
General Information
Revision date
2025-08-12
Product name
Wood Ash (for material sold in the United States)
Product Synonyms
Biomass Fuel Ash, Wood Boiler Ash, Wood Fly Ash, Fly Ash, CDK Ash, Batch Kiln Ash
1.2.1 Relevant identified uses
Soil amendment and treatment
Manufacturer Name
Weyerhaeuser
Icons in SDS
Company Information
company name
Weyerhaeuser
GHS Information
Signal word
DANGER
Hazard Codes
Hazard statements (CLP)
H314, H332, H335, H350, H372
Hazard statements
Code
Statements
H314
Causes severe skin burns and eye damage
Section 2
SECTION 2: Hazards identification
Signal word
DANGER Classification Hazard Statement(s) Pictogram
Health hazards
Carcinogen - Category 1A Crystalline silica may cause lung H350) cancer Specific Target Organ May Cause Damage to The Toxicity - Repeated Exposure, Inhalation Respiratory System Through Category 1) Prolonged or Repeated H372) Exposures If Inhaled Eye corrosion - Category 1 Causes skin burns and serious H314) eye damage Skin irritant - Category 2 H314) Hazard(s) Identification (cont’d.) Specific Target Organ May cause respiratory irritation Toxicity (STOT) H335) Acute toxicity - Category 4 Corrosive, harmful if swallowed H332)
Physical hazards
Due to variable combustion conditions, wood ash may contain Combustible Dust varying amounts of residual None
Prevention
P202: Do not handle until all safety precautions have been read and understood. P210: Keep away from sparks flames or other heat sources. P243: Take precautionary measures against static discharge. P260, P261 and P262: Avoid breathing dust. In case of inadequate ventilation wear an approved respirator suitable for conditions of use. P271: Use outdoors or in a well-ventilated area. P280: Wear appropriate protective equipment for eye and skin exposure. P362 and P363: Take off contaminated clothing and wash before reuse.
Response
P304+P340+P313: If inhaled and breathing becomes difficult, remove person to fresh air and keep comfortable for breathing. If symptoms persist, call a doctor or other qualified medical professional. P333+P313: If skin irritation or rash occurs get medical advice/attention. P352+P264: If on skin wash with plenty of soap and water. P362+P364: Take off contaminated clothing and wash before reuse. P305+P351+P338: If in eyes, rinse cautiously for several minutes. Remove contact lenses if present and easy to do so.
Disposal
P501: Dispose of in accordance with federal, state, and local regulations. Ingredients of Unknown Acute Toxicity (>1%): NAP
2.1 Classification of the substance or mixture
Hazard Statement(s) Pictogram HEALTH HAZARD(S) Carcinogen - Category 1A Crystalline silica may cause lung (H350) * cancer Specific Target Organ May Cause Damage to The Toxicity - Repeated Exposure, Inhalation Respiratory System Through (Category 1) Prolonged or Repeated (H372) Exposures If Inhaled Eye corrosion - Category 1 Causes skin burns and serious (H314) * eye damage Skin irritant - Category 2 (H314) 2. Hazard(s) Identification (cont’d.) Specific Target Organ May cause respiratory irritation Toxicity (STOT) (H335) Acute toxicity - Category 4 Corrosive, harmful if swallowed (H332) PHYSICAL HAZARD(S) Due to variable combustion conditions, wood ash may contain Combustible Dust varying amounts of residual None (OSHA Defined Hazard) combustible dust. If dry and converted to small particles during further processing, handling, or by other means, may form combustible dust concentrations in air. *Hazard codes (GHS) HMIS Rating (Scale 0-4): Health = 3* Fire = 1 Physical Hazard = 1 NFPA Rating (Scale 0-4): Health = 3 Fire = 1 Reactivity = 0