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ALUMINUM POWDER, UNCOATED

4.3 - Dangerous when wet
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The Chemical Identifier fields include common identification numbers, the NFPA diamond U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number
  • 7429-90-5
DOT Hazard Label USCG CHRIS Code
  • Dangerous When Wet
none
NIOSH Pocket Guide International Chem Safety Card
Aluminumexternal_link
NFPA 704
Diamond Hazard Value Description
3
0 1
Blue Health 0 No hazard beyond that of ordinary combustible material.
Red Flammability 3 Can be ignited under almost all ambient temperature conditions.
Yellow Instability 1 Normally stable but can become unstable at elevated temperatures and pressures.
White Special
(NFPA, 2010)
General Description
A light gray solid. Denser than water. Contact may burn skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. Used to make other chemicals.

The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
  • Strong Reducing Agent
  • Water-Reactive
  • Pyrophoric
Air & Water Reactions
Highly flammable. Produces flammable gases and heat on contact with water. May ignite on contact with water or moist air.
Fire Hazard
Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard. (ERG, 2020)
Health Hazard
Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2020)
Reactivity Profile
ALUMINUM POWDER, UNCOATED is a reducing agent. Reacts very exothermically when mixed with metal oxides and ignited or heated (thermite process). Reacts explosively when mixed with copper oxides and heated [Mellor 5:217-19 1946-47]. Reacts with metal salts, mercury and mercury compounds, nitrates, sulfates, halogens, and halogenated hydrocarbons to form compounds that are sensitive to mechanical shock [Handling Chemicals Safely 1980. p. 135]. Mixtures with ammonium nitrate are used as an explosive. A mixture with powdered ammonium persulfate and water may explode [NFPA 491M 1991]. Heating with bismuth trioxide leads to an explosively violent reaction [Mellor 9:649 1946-47]. Mixtures with finely divided bromates (also chlorates and iodates) of barium, calcium, magnesium, potassium, sodium or zinc can explode by heat, percussion, and friction [Mellor 2:310 1946-47]. Burns in the vapor of carbon disulfide, in sulfur dioxide, sulfur dichloride, nitrous oxide, nitric oxide, or nitrogen peroxide [Mellor 5:209-212 1946-47]. A mixture with carbon tetrachloride exploded when heated to 153°C and also by impact [Chem. Eng. News 32:258 (1954); UL Bull. Research 34 (1945), ASESB Pot. Incid. 39 (1968)]. Mixing with chlorine trifluoride in the presence of carbon results in a violent reaction [Mellor 2 Supp. 1: 1956]. Ignites in close contact with iodine. Three industrial explosions involving a photoflash composition containing potassium perchlorate with aluminum and magnesium powder have occurred [ACS 146:210 1945; NFPA 491M 1991]. React with methyl chloride in the presence of small amounts of aluminum chloride to give flammable trimethylaluminum. Gives a detonable mixture with liquid oxygen [NFPA 491M 1991]. The reaction with silver chloride, once started, proceeds with explosive violence [Mellor 3:402 1946-47]. In an industrial accident, the accidental addition of water to a solid mixture of sodium hydrosulfite and powdered aluminum caused the generation of SO2, heat and more water. The aluminum powder reacted with the water and other reactants leading to an explosion that killed five workers [Case Study, Accident Investigation: Napp Technologies, presented by John Ferris, Paul Kahn, Mike Marshall, Fourteenth International Hazardous Material Spills Conference]. Particles can become electrostatically charged if swirled, transported by pneumatic means or poured.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

DO NOT USE WATER OR FOAM.

SMALL FIRE: Dry chemical, soda ash, lime or sand.

LARGE FIRE: DRY sand, dry chemical, soda ash or lime or withdraw from area and let fire burn. If it can be done safely, move undamaged containers away from the area around the fire.

FIRE INVOLVING METALS OR POWDERS (ALUMINUM, LITHIUM, MAGNESIUM, ETC.): Use dry chemical, DRY sand, sodium chloride powder, graphite powder or class D extinguishers; in addition, for Lithium you may use Lith-X® powder or copper powder. Also, see ERG Guide 170.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)
Non-Fire Response
Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch or walk through spilled material. Stop leak if you can do it without risk. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. DO NOT GET WATER on spilled substance or inside containers.

SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Dike for later disposal; do not apply water unless directed to do so.

POWDER SPILL: Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST. (ERG, 2020)
Protective Clothing
Excerpt from NIOSH Pocket Guide for Aluminumexternal link:

Skin: No recommendation is made specifying the need for personal protective equipment for the body.

Eyes: No recommendation is made specifying the need for eye protection.

Wash skin: No recommendation is made specifying the need for washing the substance from the skin (either immediately or at the end of the work shift).

Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.

Change: No recommendation is made specifying the need for the worker to change clothing after the workshift. (NIOSH, 2023)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Excerpt from NIOSH Pocket Guide for Aluminumexternal link:

Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.

Breathing: FRESH AIR - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary. (NIOSH, 2023)

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources.

Note: For Vapor Density and Specific Gravity, comparing the value to 1.0 can tell you if the chemical will likely sink/rise in air or sink/float in fresh water (respectively). Short phrases have been added to those values below as an aid. However, make sure to also consider the circumstances of a release. The Vapor Density comparisons are only valid when the gas escaping is at the same temperature as the surrounding air itself. If the chemical is escaping from a container where it was pressurized or refrigerated, it may first escape and behave as a heavy gas and sink in the air (even if it has a Vapor Density value less than 1). Also, the Specific Gravity comparisons are for fresh water (density 1.0 g/mL). If your spill is in salt water (density about 1.027 g/mL), you need to adjust the point of comparison. There are some chemicals that will sink in fresh water and float in salt water.
Chemical Formula:
  • Al
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 1220°F (NIOSH, 2023)
Vapor Pressure: 0 mmHg (approx) (NIOSH, 2023)
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 2.7 (NIOSH, 2023) - Denser than water; will sink
Boiling Point: 4221°F at 760 mmHg (NIOSH, 2023)
Molecular Weight: 27 (NIOSH, 2023)
Water Solubility: Insoluble (NIOSH, 2023)
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

No PAC information available.

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

Regulatory Name CAS Number/
313 Category Code
EPCRA 302
EHS TPQ
EPCRA 304
EHS RQ
CERCLA RQ EPCRA 313
TRI
RCRA
Code
CAA 112(r)
RMP TQ
Aluminum (fume or dust) 7429-90-5 313

(EPA List of Lists, 2022)

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

RELEASE THEFT SABOTAGE
Chemical of Interest CAS Number Min Conc STQ Security
Issue
Min Conc STQ Security
Issue
Min Conc STQ Security
Issue
Aluminum (powder) 7429-90-5 ACG 100 pounds EXP/IEDP

(CISA, 2007)

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

This section provides a listing of alternate names for this chemical, including trade names and synonyms.
  • A 1-18000
  • A 5052H34
  • A 6063S
  • A 95
  • A 95 (METAL)
  • A 99
  • A 99 (METAL)
  • A 999
  • A 999V
  • A 99N
  • AA 15
  • AC 0460
  • AC 1000
  • AC 1003
  • AC 2500
  • AC 5005
  • AIH 30H
  • AISIN METAL FIBER
  • AL 18000
  • ALBO F
  • ALCAN 105
  • ALCAN 2000
  • ALCAN 7100
  • ALCAN XI 1391
  • ALCOA 2468
  • ALCOA 7468
  • ALPASTE 0100M
  • ALPASTE 0200M
  • ALPASTE 0200T
  • ALPASTE 0230T
  • ALPASTE 0241M
  • ALPASTE 0300M
  • ALPASTE 0500M
  • ALPASTE 0620MS
  • ALPASTE 0700M
  • ALPASTE 100MS
  • ALPASTE 100MSR
  • ALPASTE 1100M
  • ALPASTE 1100NA
  • ALPASTE 1109MA
  • ALPASTE 1200M
  • ALPASTE 1500MA
  • ALPASTE 1700NL
  • ALPASTE 1810YL
  • ALPASTE 1830YL
  • ALPASTE 1900M
  • ALPASTE 1900XS
  • ALPASTE 1950M
  • ALPASTE 2
  • ALPASTE 2173
  • ALPASTE 240T
  • ALPASTE 241M
  • ALPASTE 417
  • ALPASTE 46-046
  • ALPASTE 51-231
  • ALPASTE 52-509
  • ALPASTE 52-568
  • ALPASTE 53-119
  • ALPASTE 54-452
  • ALPASTE 55-516
  • ALPASTE 55-519
  • ALPASTE 55-574
  • ALPASTE 60-600
  • ALPASTE 60-760
  • ALPASTE 60-768
  • ALPASTE 66NLB
  • ALPASTE 7130N
  • ALPASTE 7160N
  • ALPASTE 7430NS
  • ALPASTE 7620NS
  • ALPASTE 7640NS
  • ALPASTE 7680NS
  • ALPASTE 76840NS
  • ALPASTE 7730N
  • ALPASTE 7770N
  • ALPASTE 8004
  • ALPASTE 8080N
  • ALPASTE 8260NAR
  • ALPASTE 891K
  • ALPASTE 93-0647
  • ALPASTE HS 2
  • ALPASTE K 9800
  • ALPASTE MF 20
  • ALPASTE MG 1000
  • ALPASTE MG 1300
  • ALPASTE MG 500
  • ALPASTE MG 600
  • ALPASTE MH 9901
  • ALPASTE MR 7000
  • ALPASTE N 1700NL
  • ALPASTE O 100N
  • ALPASTE O 300M
  • ALPASTE SAP 110
  • ALPASTE WB 0230
  • ALPASTE WX 0630
  • ALPASTE WX 7830
  • ALPASTE WXM 0630
  • ALPASTE WXM 0650
  • ALTOP X
  • ALUMINIUM
  • ALUMINIUM FLAKE
  • ALUMINUM
  • ALUMINUM (DUST OR POWDER), METALLIC POWDER
  • ALUMINUM (FUME OR DUST)
  • ALUMINUM 27
  • ALUMINUM ATOM
  • ALUMINUM ELEMENT
  • ALUMINUM METAL
  • ALUMINUM POWDER
  • ALUMINUM POWDER, UNCOATED
  • ALUMINUM POWDER, [METALLIC]
  • AQUAPASTE 205-5
  • ASB
  • ASB (METAL)
  • ASTROFLAKE 40
  • ASTROFLAKE BLACK N 020
  • ASTROFLAKE BLACK N 070
  • ASTROFLAKE LG 40
  • ASTROFLAKE LG 70
  • ASTROFLAKE SILVER N 040
  • AW 666C
  • AW 7000R
  • AW 808
  • AW 808C
  • C.I. 77000
  • CHROMAL X
  • CR 50FM
  • DS 5002
  • E 347
  • E 347 (PIGMENT)
  • EBP 251PA
  • ECKA AS 081
  • ELAMET 100
  • ELAMET 250
  • ELAMET 500
  • ELEMENTAL ALUMINUM
  • ETERNA BRITE 301-1
  • ETERNA BRITE 601-1
  • ETERNA BRITE 651-1
  • FINE 900
  • FRIEND COLOR F 500WT
  • FX 1415
  • FZ-T 60B
  • H 26
  • H 26 (METAL)
  • HI PRINT 60T
  • HISPARKLE HS 2
  • JIS 1N99
  • JISA 51010P
  • JISC 3108
  • JISC 3110
  • K 102
  • K 102 (METAL)
  • KRYAL Z
  • L 1018
  • L 16
  • LANSFORD 243
  • LEPC 2027
  • M 601
  • M 601 (PIGMENT)
  • 1001M
  • MC 606
  • METANA
  • MF 20
  • MG 51
  • MH 8801
  • MIRROR GLOW 1000
  • MIRROR GLOW 600
  • MR 9000
  • 5N
  • 725N
  • NORAL ALUMINIUM
  • NORAL EXTRA FINE LINING GRADE
  • NORAL INK GRADE ALUMINIUM
  • 7620NS
  • OBRON 10890
  • OBRON 5413
  • 716ON
  • P 0100
  • P 0100 (METAL)
  • PA 8260
  • PAP 1
  • PAP-CI
  • PCF 8160
  • PO 100
  • 561PS
  • REYNOLDS 4-301
  • REYNOLDS 4-591
  • REYNOLDS 400
  • REYNOLDS 667
  • S 40
  • S 40 (METAL)
  • SA 8000T
  • SAP 1110W
  • SAP 120
  • SAP 123
  • SAP 2173
  • SAP 405N
  • SAP 4120
  • SAP 510N
  • SAP 563PS
  • SAP 574PS
  • SAP 630N
  • SAP 640N
  • SAP 720N
  • SAP 725N
  • SAP 771N
  • SBT 554RD
  • SETANIUM 50MIS-H8
  • SHORIC
  • SILVAR A
  • SPARKLE SILVER 3141ST
  • SPARKLE SILVER 3500
  • SPARKLE SILVER 516AR
  • SPARKLE SILVER 5245AR
  • SPARKLE SILVER 5271AR
  • SPARKLE SILVER 5500
  • SPARKLE SILVER 7005AR
  • SPARKLE SILVER 7500
  • SPARKLE SILVER SS 3130
  • SPECIAL PCR 212
  • SPOTA MOBIL 801
  • SS 3666
  • SS 6246AR
  • SS 7000AR
  • STAPA 20HK
  • STAPA ALOXAL PM 2010
  • STAPA ALOXAL PM 3010
  • STAPA ALOXAL PM 4010
  • STAPA HYDROLAC BG 8N.1
  • STAPA HYDROLAC BGH CHROMAL X
  • STAPA HYDROLAC PM CHROMAL VIII
  • STAPA HYDROLAC WH 16
  • STAPA METALLUX 212
  • STAPA METALLUX 2196
  • STAPA MOBILUX 181
  • STAPA PV 10
  • STAPA VP 46432G
  • SUPER FINE 18000
  • SUPERFINE 18000WN
  • SUPERFINE 22000WN
  • SUPRAMEX 2022
  • T 2054
  • TRANSMET K 102HE
  • TRC 3010
  • TRC 3040
  • TUFFLAKE 5843
  • US ALUMINUM 809
  • UT 901
  • VALIMET H 3
  • VI 5
  • VI 5 (METAL)
  • VSVA 97N
  • VTSO 112
  • WHITE SILVER 7130N
  • WX 0630
  • WX 1130
  • WZ 7160
  • 0900X
  • 40XD
  • 5XD
  • XI 1136

Version 3.0.0