Conserve O Gram 2/17: Physical Properties and Health Effects of Pesticides Used on National Park Service Collections

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At least 55 different chemical compounds and mixtures (including arsenic and mercury) may have been used to preserve National Park Service (NPS) museum collections (see Conserve O Gram 2/17, “Chronology of Pesticides Used on National Park Service Collections”). Virtually all are irritants, and many are harsh poisons and/or carcinogens. All objects that may have been treated with pesticides must be handled with caution. The charts on the following pages give a thumbnail sketch of pesticides suspected to have been used on NPS collections, including:

  • physical properties

  • health effects

  • route of entry

  • type of poison

  • handling procedures

  • synonyms and trade names

If there is any chance that your collections have been treated with any of these chemicals, be sure to obtain Material Safety Data Sheets (MSDS) to have more thorough descriptions and handling information available to collections personnel. The MSDS sheets are available either from the chemical manufacturer or from a number of online Internet sources.

Sources for Material Safety Data Sheets

Agency for Toxic Substances and Disease Registry

The EXtension TOXicology NETwork (EXTOXNET)

National Toxicology Program

Pesticide Action Network Pesticide Database

United States Environmental Protection Agency (EPA)

Occupational Safety and Health Administration

Cornell University

PESTICIDE

PHYSICAL PROPERTIES

HEALTH EFFECTS

ROUTE OF ENTRY

TYPE

HANDLING

SYNONYMS AND TRADE NAMES

Arsenic

As

silver-gray or white metallic solid

carcinogen, skin, eye and

respiratory irritation

inhalation,

ingestion, skin

herbicide,

insecticide,

fungicide

Nitrile gloves, dustproof

goggles

Arsenical soap, arsenic powder

Baygon

C11H15NO3

Colorless crystalline powder, with a faint odor

No data

inhalation,

ingestion, skin

insecticide

gloves, dust-proof goggles

Propoxur, Aprocarb, Bifex, IMPC, Blattanex, Invisi-Gard, Suncide, Senchan

Benzethonium

Chloride

C27H42ClNO2

colorless or white crystals or powder,

odorless

skin, eye, mucous membrane and upper respiratory tract irritant

inhalation,

ingestion, skin

microbiocide

gloves, splashproof

goggles

Hyamine1622, Solamine, BZTG, Phemithyn, Phemeride, Antiseptol

Benzol

C6H6

colorless liquid with aromatic odor, flammable

carcinogen, damages central nervous system, blood, skin, bone marrow, eyes, and respiratory tract.

inhalation,

ingestion, skin

solvent resistant

polyvinyl alcohol gloves, respirator, splash proof goggles, shield

benzene, carbon oil, cyclohexatriene, coal naphtha, phenyl hydride

Boric Acid

H3BO3

colorless odorless solid

may cause chest pain,

coughing, breathing difficulty, skin, eye and

gastrointestinal irritation

inhalation,

ingestion, skin

insecticide,

miticide

gloves, safety

glasses

PermaDust, It Works, Drax Ant Kill, BoraCare, JECTA, Borid

Camphor Gum

C10H16O

colorless or white solid

with strong odor

eye, skin and mucous membrane irritant, affects central nervous system and

respiratory system

inhalation,

ingestion, skin, eyes

insecticide,

fungicide,

microbiocide

gloves, lab coat, safety glasses

Camphor,

2-camphanone,

2-bornanone, Camphor Oil

Carbon disulfide

CS2

colorless to yellow liquid, strong odor,

flammable

Affects respiratory, cardiac, central nervous, liver,

kidney, and reproductive

systems

inhalation,

ingestion, skin, eyes

fumigant

gloves, safety

glasses

carbon bisulfide,

sulphocarbonic anhydride, dithiocarbonic anhydride

Carbon tetrachloride

CCl4

clear liquid, colorless gas with etheral odor

suspected carcinogen, eye and skin irritant, affects liver, kidney and central nervous system

inhalation,

ingestion, skin, eyes

fumigant

safety glasses,

polyvinyl gloves, and apron

Benzinoform, Freon 10, Halon 104, Tetraform, Tetrasol, Carbona

Chlordane

C10H6Cl8

viscous amber to colorless liquid with a

mild odor

suspected carcinogen,

affects central nervous system, gastrointestinal tract, and liver

inhalation,

ingestion, skin, eye

insecticide

goggles, chemical/solvent

resistant gloves, apron

Toxichlor, Niran, Octachlor, Orthoklor, Synklor, Corodane

Chloretone

C4H4Cl3O

combustible

affect the liver and respiratory system

inhalation,

ingestion

Safety goggles, impervious gloves

chlorobutanol, acetone chloroform, Sedaform, Methaform

Chloroform

CHCl3

Clear, colorless liquid

with sweet odor

suspected carcinogen, affects liver, kidney and central nervous system

inhalation,

ingestion, skin, eye

fumigant

goggles and shield, lab coat and apron, gloves

Methyl trichloride, trichloromethane,

trichloroform

Chlorpyrifos

C9H11Cl3NO3

white or colorless granular crystals, gas-like odor

may affect the central nervous system and the liver

inhalation,

ingestion, skin

insecticide

gloves, dust proof goggles

Dowco 179, Dursban, Lorsban, Pyrinex, Eradex, Killmaster, Brodan, O,Odiethyl O-3m5m6 trichloro-2 pyridyl phosphorothioate

Combat

insecticide

Contrac Rat and Mouse Bait C30H23BrO4

blue meal with sweet grain-like odor

bleeding gums, nose bleeds,

bruises, stomach pain

inhalation,

ingestion, skin

rodenticide

rubber gloves

Bromadiolone, Boldo, Ratimus, Maki, Super-Caid, Bromatrol,

Tamogan

Copper-8-

quinolate

C18H12CuN2O2

green to yellow

crystalline powder

may cause asthmatic symptoms, diarrhea,

vomiting

inhalation,

ingestion

fungicide,

microbiocide

Safety glasses, gloves

oxine-copper, Culinate,

Dokrin, Frutido, Milmer,

Bioquin, Dodivin,

Chapman, Q-san,

Cupracide

Cuprinol Clear

#20

clear amber liquid with

mineral spirits odor

eye, skin, respiratory, and gastrointestinal irritant

inhalation,

ingestion, skin

fungicide

respirator, gloves, safety glasses

Napthenic acid, zinc salt, CNC, Troysan, WILTZ

65, Wittox-C, Copper Nap-All

Cyanide

CHN

colorless gas, or white solid with faint almond odor

can cause weakness, headache, nausea, eye and skin irritation, thyroid disorders, and death.

inhalation,

ingestion, skin

fumigant

respirator,

prussic acid, formonitrile,

Cyclon, hydrocyanic acid, isocyanide

DDT

C14H9Cl5

colorless solid, or white to slightly off-white powder, with faint odor

Probable carcinogen; reproductive, liver, and kidney problems; eye, nose, skin, throat irritant

inhalation,

ingestion, skin

insecticide

respirator, gloves, goggles, and face shield

Dicophane, Agritan, Gesapon, Gesapex, Citox,

Detox, Anofex, Geasrol, Neocid, Flit, Bug-a-boo

Diazinon

C12H21N2O3PS

oily colorless liquid

eye and skin irritant; may

cause gastrointestinal symptoms

inhalation,

ingestion, skin

insecticide

gloves, long pants and sleeves, face

shield, goggles

Basudin, Dazzel,

Gardentox, Royazol, Knox

Out, Nucidol, Spectracide,

Alfatox, DropDead,

phosphorothioic acid

Dichlorvos

C4H7Cl2O4P

clear, slightly yellow liquid with a mild odor; combustible

suspected carcinogen, can affect the central nervous system

inhalation,

ingestion, skin

insecticide

Nitrile gloves,

Tyvek clothes (if possible),

respirator,safety

glasses

Unitox, Lindan, DDVP, Vapona, Shell No-Pest Strips, Flie Die, Nuvan, Astrobot, Cypona

Dowfume 75 (75% EDC, 25% carbon

tetrachloride)

fumigant

Dichloroethane mixed with tetrachloromethane;

Dri-die

white odorless powder

eye irritant

inhalation

insecticide

dust mask, rubber gloves

silica aerogel with ammonium flucosilicate

Drione

off white-to-white dry

powder with slight odor

eye irritant

inhalation,

ingestion

insecticide,

miticide

dust mask, gloves, safety glasses

piperonyl butoxide with silica and pyrethrins, Staffels Ant and Roach

Killer, D-Con Crawling Bug Killer, Viper Drione

Ethion

C9H22O4P2S4

colorless or light brown

to pale yellow liquid or dust

affects central nervous system, and gastrointestinal system; chest tightness; runny nose

inhalation,

ingestion, skin

insecticide

dust mask, gloves, safety glasses

Ethanox, Hylmox, Nialate, Rhodocide

Ethylene dichloride

C2H4Cl2

colorless oily liquid with chloroform odor; flammable

irritant, dizziness, headache, nausea, rash, coma

inhalation,

ingestion, skin

fumigant

respirator, PVA

gloves, safety

glasses with side

shields

EDC, dichloroethane,

dichloroethylene, Dutch liquid

Ethylene oxide

C2H4O

colorless gas with etherlike

odor

carcinogen; skin and eye

irritant; affects central nervous and circulatory systems

inhalation,

ingestion, skin

fumigant

respirator, impervious gloves (not rubber), flame

resistant clothing, goggles

oxirane, dimethylene oxide, ETO, Ethox, Oxyfume, Anprolene

Formalin CH2O

Colorless liquid with pungent odor, combustible

suspected carcinogen; eye, skin, respiratory irritant

inhalation, ingestion, skin

fungicide

respirator, Nitrile gloves, goggles

methylene glycol, formaldehyde, Morbicid, Formol, BFV, Fanoform, Lysoform, methanal

Hydrocyanic acid gas CHN

colorless or pale blue gas or liquid with bitter almond odor

Very poisonous; affects central nervous system, thyroid; skin, eye irritant; headache; death

inhalation, ingestion, skin,

eye

fumigant

respirator, gloves, goggles

prussic acid, formonitrile,

Cyclon, hydrogen cyanide

Lexol Neats Foot Formula

translucent yellowish to

brownish oily liquid

non-toxic

Microbiocide, protectant

Lindane C6H6Cl6

white or colorless crystalline solid with slight musty odor

suspected carcinogen, affects central nervous, respiratory, reproductive systems, and liver

inhalation,

ingestion, skin

insecticide

goggles, gloves,

respirator

Aficide, Agrocide,

Benzene hexachloride, Bexol, Celanex, Entomoxan, Gamacid, Kewell, Lindafor, Novigan, Hexicide

Malathion C10H19O6PS2

clear brown to colorless liquid with mild skunk-like odor

skin, eye, nose irritant; affects respiratory and

central nervous systems

inhalation, ingestion, skin

insecticide

Nitrile gloves, Tyvek clothing (if

possible), respirator, splash-proof

goggles

Chemathion, Malacide, Karbofos, Detmol, Cythion, Malaspray, Lice Rid, o,o-dimethyl thiophosphate

Mercuric chloride Cl2Hg

white crystalline

powder

corrosive to tissues; kidney

and gastrointestinal

disfunction

inhalation,

ingestion, skin

fungicide

Tyvek clothing,

NIOSH approved SCBA, rubber gloves, goggles

mercury bichloride,

corrosive sublimate,

mercury perchloride,

Fungchex, TL 898,

dichloro mercury

Methyl bromide

CH3Br

colorless liquid or gas with fruity odor

skin and eye irritant; affects central nervous and cardiac

systems

inhalation, ingestion, skin

fumigant

protective glasses, work in a fume hood, gloves

bromomethane,

monobromothane,

Embafume, Terabol, methyl fume

Naphthalene

C10H8

white crystals with

moth ball odor;

flammable; combustible

skin and eye irritant; affects

liver and kidney

inhalation,

ingestion, skin

fumigant

gloves, safety

glasses, respirator

Napthalene, Coal Tar

Camphor, Naphthalin,

Naphthalinium, moth balls

Orkin Aid 4E (see

diazinon)

Orthodichlorobenzene

C6H4Cl2

clear liquid with mild

aromatic odor

skin and eye irritant; affects central nervous, respiratory systems, liver, kidney

inhalation,

ingestion, skin,

eye

insecticide

respirator, gloves,

safety goggles

dichlorobenzene, DCB, Chloroben, Dilantin DB,

Dowtherm E, Termitkil, dichlorobenzol

Paradichlorobenzene

C6H4Cl2

colorless or white, volatile crystals with

strong odor; combustible

suspected carcinogen, affects respiratory, circulatory, central nervous, renal systems.

inhalation,

ingestion, skin

fumigant

gloves, full face respirator or dust or gas-proof goggles

PDB, Evola, Globol, Paracide, Parazene, Paradow, Paramoth, Paranuggets

Paranitrophenol

C6H6NO3

colorless to slightly yellow crystals or powder, odorless

skin, eye, nose, throat irritant; headache, liver and kidney damage

inhalation,

ingestion, skin

fungicide

chemical resistant

glasses, gloves,

respirator

PNP, NIPHEN,

mononitrophenol,

4-hydroxynitrobenzene

Pentachlorophenol C6Cl5OH

colorless to white crystalline solid with benzene-like odor

possible carcinogen; eye, skin, nose, throat irritant; liver and kidney damage

inhalation,

ingestion, skin,

eye

fungicide

gloves, safety

glasses

PCP, Dowcide 7,

Permacide, Thompsons Wood fix, Fungol, Permagard, PentaKil, Mystox

Permethrin

C21H20Cl2O3

odorless, colorless

crystalline solid or pale brown viscous liquid

eye, skin, Respiratory irritant; affects central nervous system.

inhalation,

ingestion, skin

insecticide

gloves, face shield

Ambush, Ectiban, Pounce, Nix Dragnet, Spartan

Phenol C6H6O

syrupy clear to pinkish liquid or colorless to pink solid with sweet odor

corrosive to eyes, mucous

membranes, and skin

inhalation, skin

microbiocide

respirator,

impervious gloves,

chemical goggles

carbolic acid, phenic acid,

Oxybenzene

Potassium cyanide CKN

white lumps or crystals with bitter almond odor

SUPER TOXIC; corrosive to

eyes, skin, respiratory tract; death

inhalation, ingestion, skin

poison,

rodenticide

Rubber gloves,

Chemical goggles, lab coat, work in

hood

hydrocyanic acid,

potassium salt

Premise 75

(imadacloprid)

C9H10ClN5O2

wettable powder or colorless crystals with weak odor

skin and eye irritant

inhalation,

ingestion, skin

insecticide

Admire, Merit, Gaucho, Confidor 2

Pyrethrins

light amber liquid or oil

skin, eye irritant, may affect central nervous and

respiratory systems

inhalation, ingestion, skin

insecticide

Neoprene gloves, splash resistant goggles

pyrethrum, Buhach,

Chrysanthemum,

Ofirmotox, Firmotox,

Dalmation insect flowers,

Pyrethrum

C20-22H28-30O3-5

viscous brown resin or oil; combustible

skin, eye irritant, may affect central nervous and

respiratory systems

inhalation,

ingestion, skin

insecticide

gloves, goggles, respirator

Pyrethrins, Cinerin I or II, Jasmolin, Tri-Die PT230

Quintox Mouse

Seed (colecalciferol) C27H44O

blue meal

hypercalcemia, anorexia, nausea

inhalation,

ingestion, skin,

eye

rodenticide

Rubber gloves

9,10-Secocholest-

5,7,10(19)-trien-3-ol, Vitamin D,

dehydrochloestrol,

Deparal, Delsterol,

Ricketon, Tiritan,

Vigantol

Recruit

(hexaflumuron) C16H8Cl2F6N2O3

white solid odorless

eye irritant, liver and kidney damage

inhalation,

ingestion, skin

termiticide,

insecticide

gloves, dust proof mask and glasses

1-(3,5-Dichloro-4-(1,1,2, 2 tetrafluoroethoxy)

phenyl)-3-(2,6-difluorobenzoyl)

urea

Roach Rid (Boric Acid)

insecticide

see boric acid

Rozol (chlorophacinone) C23H15ClO3

bluish green solid, odorless

skin, eye irritant; may affect liver

ingestion

rodenticide

gloves

Robert's Rat and Mouse Killer, Vam-O Formula

No. 3, Amvac, Crown, Enforce4r Rat and Mouse

Killer, Romix Special, Mouse Seed ®

Sodium Fluoride

FNa

clear white or blue crystals, odorless

eye, skin irritant; affects central nervous system, kidney, respiratory system

inhalation,

ingestion, skin,

eye

insecticide,

fungicide

PVA gloves,

respirator, lab coat,

safety glasses

Floridine, sodium

monofluoride

Thymol C10H14O

white crystal, aromatic odor, combustible

skin and eye irritant

inhalation,

ingestion, skin

fumigant

dust mask (at room temp) respirator

(elevated temp), rubber gloves, safety glasses

6-isopropyl-m-cresol

Vikane F2O2S

colorless odorless gas

Affects central nervous system, kidney, liver; death

inhalation

fumigant

respirator, chemical

goggles

sulfuryl fluoride,

Termafume

Warfarin

C19H16O4

colorless odorless solid or crystalline powder

hematuria, back pain, affects blood and Cardiovascular system,

inhalation,

ingestion, skin, eye

rodenticide

gloves, dust proof goggles

Coumadin, D-Con, Ratox, Arab Rat Death, Solfarin,

Marevan

Zinc Chloride Cl2Zn

zinc butter, zinc dichloride


Melanie Pereira, Intern
Sara J. Wolf, Conservator
Museum Management Program
National Park Service
Washington, DC 20240

The Conserve O Gram series is published as a reference on collections management and curatorial issues. Mention of a product, a manufacturer, or a supplier by name in this publication does not constitute an endorsement of that product or supplier by the National Park Service. Sources named are not all inclusive. It is suggested that readers also seek alternative product and vendor information to assess the full range of available supplies and equipment.

The series is distributed to all NPS units and is available to non-NPS institutions and interested individuals by subscription through the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402, FAX (202) 512-2233. For further information and guidance concerning any of the topics or procedures addressed in the series, contact the National Park Service, Curatorial Services Division, Harpers Ferry, WV 25425, (304) 535-6410.

Last updated: August 4, 2026