Safe Handling, Storage, and Destruction
of Nitrate-Based Motion Picture Films
H-182 (ENG) $1.00
This publication will
help you understand
Photographic films on cellulose nitrate
base (nitrocellulose) were introduced
by Eastman Kodak Company in 1889.
This film base had excellent physical
properties, but it suffered from poor
chemical stability and high
flammability. In 1948, cellulose
triacetate support was introduced; it
met the performance requirements of
motion picture films and provided
added safety. After 1951, no cellulose
nitrate motion picture film was
manufactured by Kodak.
Actual use of cellulose nitrate films
in theaters has virtually ceased.
However, large quantities of cellulose
nitrate film for archival or other
purposes still exist in storage. These
films are typically kept in vaults and
removed for limited projection,
reprinting and restoration on safety
films, or destruction.
This publication will help you
recognize and avoid the hazards
associated with cellulose nitrate motion
picture films. To safely handle, store,
transport, and destroy these films, you
must understand these hazards. The
information in this publication is based
on requirements in the United States;
requirements may differ in other
countries.
The storage and handling
requirements presented are primarily
from the National Fire Protection
Association (NFPA), Standard for the
Storage and Handling of Cellulose
Nitrate Motion Picture Film, 1994
Edition (NFPA 40). The NFPA
standards are not laws; however, states
or local authorities, such as a
government agency, local fire
department, or a building/ electrical
inspector may require compliance with
the NFPA standard.
IDENTIFICATION
Depending on the age of cellulose
nitrate films, the edge of the film may
be marked as nitrate film (“NITRATE
FILM” or “ N ”).
The words “SAFETY FILM” may
appear in the non-image area of a
motion picture film. This usually
indicates that the base is made of a
material, such as cellulose triacetate,
that passes the ISO 435 test for burning
and ignition. However, early motion
picture films marked “SAFETY
FILM” may have been printed on
cellulose nitrate film, which would also
carry the “SAFETY FILM” markings
from print through. If a film cannot be
clearly identified by markings, testing
may be required to determine the
composition of the film base.
the requirements
to safely handle,
store, transport,
and destroy
cellulose nitrate-based
films.
You can prepare and analyze a sample
of a film base by infrared absorption
through an analytical laboratory using
the procedure outlined in ISO 10682.
Another test to distinguish nitrate film
from safety film is to punch or cut a 1/4inch diameter sample from the film and
place it in a test tube or small bottle
containing trichlorethylene. You will
need to shake the liquid to ensure that
the sample is completely immersed.
Cellulose nitrate films will sink in the
liquid and safety films will float to the
surface. Cellulose nitrate films that have
started to deteriorate may change
density and may not sink in the
trichlorethylene. Always perform this
test in a well ventilated area to minimize
exposure to trichlorethylene. Dispose of
used trichlorethylene as a hazardous
waste.
Deteriorated films in the first two
stages are photographically
reproducible. Unless you have expertise
in determining the characteristics of
nitrate films in various stages of
decomposition, do not unroll the films.
For help determining the historical
value of any material on nitrate base,
contact a local historical film
association, or one of the following:
Library of Congress
Motion Picture, Broadcasting and
Recorded Sound Division
Washington, D.C. 20540-4800
Phone (202) 707-5840
Fax (202) 707-2371
National Archives and Records
Adminstration at College Park
8601 Adelphi Road
College Park, MD 20740
Phone (301) 713-6700
Fax (301) 713-2371
DETERIORATION
Federation of International Film
In addition to the inherent hazards
associated with the flammability of
cellulose nitrate film, decomposition of
the film also can present safety concerns
during its storage, handling,
transportation, and destruction. The
deterioration of cellulose nitrate films
can be divided in to five distinct stages:
Stage 1Film has an amber discoloration with fading of the image. Faint nox-
ious odor. Rust ring may form on inside of metal film cans.
Stage 2Emulsion becomes adhesive and the film tends to stick together dur-
ing unrolling. Faint noxious odor.
Stage 3Portions of the film are soft, contain gas bubbles, and emit a noxious
odor.
Archives (FIFA)
FIFA Secretariat
rue Franz Merjay 190
1180 Bruxelles/Brussels
Phone 32-2-343-06-91
Fax 32-2-343-76-22
SAFE HANDLING
As cellulose nitrate film decomposes, it
can release nitric oxide, nitrogen
dioxide, and other gases. These vapors
will accelerate the decomposition of the
remaining film base. Depending on the
airborne concentration, vapors from
decomposing film may be irritating to
your eyes, nose, and throat. Providing
adequate ventilation reduces the
airborne concentration of the vapors and
ensures that exposure limits established
by the Occupational Safety and Health
Administration (OSHA) or the
American Conference of Government
Industrial Hygienists (ACGIH) will not
be exceeded.
To avoid contact with your skin and
eyes, and to reduce the possibility of
injury, always wear impervious gloves,
such as rubber or neoprene, and eye
protection when handling decomposing
cellulose nitrate film.
PRESERVATION AND
STORAGE
Because cellulose nitrate films are
flammable and there are decomposition
concerns, you need to store and manage
them in a safe manner that limits
decomposition. You can preserve or
duplicate cellulose nitrate films until the
third stage of decomposition. Cellulose
nitrate films that have reached the third
stage of decomposition, or that have no
historical value, should be destroyed at
an authorized facility.
.
Stage 4Entire film is soft and welded into a single mass, the surface may be
covered with viscous froth, and a strong noxious odor is given off.
Stage 5Film mass degenerates partially or entirely into a shock sensitive
brownish acrid powder.
Safe Handling, Storage, and Destruction of Nitrate-Based Motion Picture Films• H-182 (ENG) 2
Page 3
STORAGE
Choosing a storage facility for cellulose
nitrate films depends on the amount of
film to be stored.
For short-term storage, you can use
approved film cabinets for storing up to
750 pounds of film (equal to 150 1000foot rolls). Use vaults for longer-term storage of amounts up to 750 pounds.
Always store amounts over 750 pounds
in vaults. Be sure to segregate cellulose
nitrate films from other film storage
areas.
For extended-term storage (for
preservation of material having
permanent value), store in archival
cabinets or vaults that contain individual
compartments and allow for
decomposition gas venting.
Do not exceed 70°F inside the storage
vault, and maintain the relative humidity
below 50 percent. For long-term storage
requirements, store the film at 35°F at
20- to 30-percent relative humidity.
Refer to the design specifications for
film cabinets and vaults, including
materials of construction, maximum
capacity, venting, and sprinkler
requirements found in NFPA 40,
Chapter 4. You should also check your
local fire code for additional film
storage requirements.
In addition to cool and dry storage,
Molecular Sieves are recommended for
storage of all cellulose nitrate films. You
can promote extended keeping and
preservation of cellulose nitrate films
with the placement of Molecular Sieves
inside the film storage container. These
sieves scavenge and catalytically
decompose the gases that are generated
during the storage of cellulose nitrate
films and retard the degradation
reactions. Molecular Sieves are
available from FPC,
6677 Santa Monica Boulevard, Los
Angeles, California 90038,
(800) 814-1333 or (213) 468-1574.
Exposure to temperatures in excess of
185°F accelerates decomposition of
these films. While they deteriorate,
nitrate-based films can develop pressure
and heat in the film can, especially when
the can is taped closed. Contained gases
and heat can lead to spontaneous
combustion. Therefore, it is
recommended that you store cellulose
nitrate films in painted or tin-plated
metal cans with loose lids. Do not tape
the lids or use tight-fitting lids unless
you are using Molecular Sieves.
Decomposition gases (powerful
oxidizing agents) can also react with
nearby acetate and polyester base films,
so you will need to store cellulose nitrate
films in a separate area. The
decomposition gases can also promote
decomposition of nearby cellulose
nitrate films. If your cellulose nitrate
films need to be stored, but have started
to deteriorate, you must store them in an
area that is separate from other cellulose
nitrate film storage areas.
Store cellulose nitrate films in vaults
in single or double roll containers or in
approved shipping containers. You will
need to examine the entire length of
nitrate films prior to vault storage. If
they are stored with temperature and
humidity controls, you should inspect
nitrate films on a hand rewind machine
annually. Where storage conditions are
not controlled, you should examine
films every six months, or more
frequently in warm climates. Any nitrate
films you find in good condition can be
returned to the storage vault. Any films
that have progressed to the third stage of
decomposition need to be destroyed at
an approved facility.
PROJECTION
You need to exercise care when
attempting to project cellulose nitrate
films. Cellulose nitrate motion picture
films may be brittle and shrunken. Do
not attempt to unroll or project a
cellulose nitrate film unless you are
thoroughly familiar with its physical
characteristics. Improper projection can
damage or destroy the film.
Because of the potential fire hazards,
the projection of cellulose nitrate films
is not a common practice. You should
project cellulose nitrate films only in
specially designed enclosures using
projectors with air cooling systems.
(Refer to design specifications in NFPA
40, Chapter 6.) Projection booths in
older theaters were typically constructed
with thick concrete walls, large steel
doors mounted on rolling tracks, and
explosion relief panels. Specialized
projectors with fire prevention rollers
were also used.
Since decomposition is accelerated
with high temperatures, projecting
cellulose nitrate film without air cooling
systems will advance the decomposition
stage. Therefore, do not return film that
was exposed to high temperatures to
your storage vault for long-term storage.
You can reprint your film onto safety
film and then send the cellulose nitrate
film to an authorized facility to be
destroyed.
Safe Handling, Storage, and Destruction of Nitrate-Based Motion Picture Films• H-182 (ENG)
3
Page 4
REPAIR AND DUPLICATION
Cellulose nitrate film repair and
duplication services are not commonly
offered. The following companies that
provide these services are listed for your
convenience but do not constitute a
recommendation or endorsement by
Kodak:
HFC Rejuvenation
826 Seward
Hollywood, CA 90038
(213) 462-1971
ADF/Photogard/Durafilm
Film Coating Laboratory
1015 North Cahunga Blvd.
Hollywood, CA 90038
(213) 469-8141
(Cleaning & physical repair only)
Cinema Arts Inc.
P. O. Box 70
South Sterling, PA 18460
(717) 676-4145
Cine-Tech
920 Allen Ave
Glendale, CA 91201
(818) 242-2181
YCM Labs
312 West Burbank Blvd.
Burbank, CA 91506
(818) 843-5300
Film Technology Company, Inc.
726 North Cole Ave.
Hollywood, CA 90038
(213) 464-3456
TRANSPORTATION
Cellulose nitrate films that are shipped
to a facility for storage, projection,
duplication, or repair must meet special
transportation requirements. Cellulose
nitrate-based films are considered
hazardous materials ( dangerous goods)
by the United States Department of
Transportation (US DOT).
You must include one of the
following descriptions on shipping
papers that accompany the film,
depending on mode of transport.
• For air transport (domestic or
internationally) or domestic transport
by ground within the United States
(U.S.): films, nitrocellulose base, 4.1,
UN1324, III.
• For transport by ocean
internationally: films, nitrocellulose
base, class 4.1, UN1324, III.
Package your cellulose nitrate films
so that each reel of film is packed in a
tightly closed inner metal can,
Polypropylene canister, or in an inner
packaging of strong cardboard or
fiberboard with cover held in place by
adhesive tape or paper. The inner
packaging must be packed in one of the
following outer packagings:
For ground and ocean transportation,
packagings must meet the packing
group III (three) performance standards.
For air transport (domestic or
international) packagings must meet the
packing group II (two) performance
standards.
The following mark and label must be
kept together and affixed to the outer
packaging (do not place on the top or
bottom of package):
Mark: Films nitrocellulose base,
UN 1324
Hazard Communication label:
Flammable Solid
US DOT may also allow additional
types of shipping containers for
transporting cellulose nitrate films. PRC
offers a container that is an acceptable
inner packaging for nitrocellulose-based
films. These containers are available
from Plastic Reel Corporation of
America (PRC), Brisbin Avenue,
Lyndhurst, New Jersey 07071, (201)
233-5100
Cellulose nitrate films can be
transported in aircraft within the
maximum limit of 25 Kg (55 pounds) on
passenger aircraft or 100 Kg (220
pounds) on cargo aircraft. Vehicles or
other public conveyance used for the
transportation of passengers can be used
for the transportation of cellulose nitrate
film. Transportation using underground
trains or subways is prohibited.
Cellulose nitrate films that are
shipped to a facility for storage,
projection, duplication, or repair must
be transported by a carrier that is
authorized by US DOT.
* Outer fiberboard or solid plastic boxes and
fiber drums must be limited to a single reel of
not over 600 meters (1,969 feet) o f film.
Safe Handling, Storage, and Destruction of Nitrate-Based Motion Picture Films• H-182 (ENG) 4
Page 5
WASTE MANAGEMENT
AND DESTRUCTION
Cellulose nitrate films that have reached
the third stage of decomposition, or have
no historical value, need to be destroyed
properly. Since these films decompose
rapidly under certain conditions and are
flammable, it is important that you store
and transport these materials safely.
WASTE CLASSIFICATION
Once it is determined that a cellulose
nitrate film needs to be destroyed, it is
considered a waste. Under the Resource
Conservation and Recovery Act
(RCRA), all waste cellulose nitrate
films should be classified as hazardous
wastes. Cellulose nitrate film that is
designated for destruction must be
identified as a hazardous waste using all
applicable Environmental Protection
Agency (EPA) Waste Codes. The
following EPA Waste Codes may apply
to cellulose nitrate film:
Stable cellulose nitrate films
designated for destruction or those that
are in one of the first two stages of
decomposition should be classified as a
hazardous waste using EPA Hazardous
Waste Codes D001 and D003. Cellulose
nitrate films that are in one of the last
three stages of decomposition should be
classified as a hazardous waste using
EPA Hazardous Waste Codes D001,
D003, and D011.
HAZARDOUS WASTE
STORAGE
All cellulose nitrate films that are
marked for destruction need to be stored
and transported under water.
You will need to place them in a steel
or plastic drum that meets US DOT
specifications, and cover the films with
water. The water must be more than 25
percent by weight of the total weight of
the films. (Water weighs about 8 pounds
per gallon.) Be sure to take into account
the weight of any film reels.
When a cellulose nitrate-based film is
designated for destruction, and is,
therefore, a hazardous waste, RCRA
requirements may apply to your storage
facility. Long-term storage may require a
RCRA permit. When a cellulose nitratebased film is determined to be a
hazardous waste, you should send it to an
authorized waste-treatment facility for
proper destruction as soon as possible.
EPA Waste CodeDefinition
D001A material is defined as an ignitable hazardous waste if it
is an oxidizer as defined under USDOT regula tions. Nitrate
containing materials are specifically defined as oxidizers
under those provisions.
D003A material is defined as a reactive hazardous wast e if it is
capable of detonation or explosive reaction when subjecte d
to a strong initiating source or heated under confinement.
Cellulose nitrate films meet this criteria; they will spontaneously ignite under elevated temperatures. The rate of
combustion of nitrate films is about fifteen times that of
wood, and the resulting intense fire is virtual ly impossible to
control or easily extinguish.
D011A material is defined as a hazardous waste possessing the
characteristic of leachable toxicity for silver if, when
exposed to the Toxicity Characteristic Leaching Procedure
(TCLP), the material leaches > 5 mg/l (ppm) of silver.
Typically photographic films do not leach > 5 mg/l of silver
when subjected to the TCLP. However, during decomposition, it is likely that more silver may be present during
leaching once the film has reached the third stage of
decomposition. The TCLP can also be performed on a
representative sample of a film to define its characteristics.
Safe Handling, Storage, and Destruction of Nitrate-Based Motion Picture Films• H-182 (ENG)
5
Page 6
HAZARDOUS WASTE
TRANSPORTATION
The transportation of cellulose nitrate
films is regulated by both the US DOT
and the United States Environmental
Protection Agency (USEPA). Cellulose
nitrate-based films are considered
hazardous materials under USDOT and
hazardous wastes by USEPA.
You are required to include the
Shipping Name, ID Number, Hazard
Class, and Hazard Label on the shipping
papers that accompany the films for
destruction:
Shipping NameWaste
Nitrocellulose, wet
with not less than
25% water, D001,
D003, D011
Identification
Number
Hazard Class4.1
Hazard LabelFlammable solid
* Include EPA Waste Code D011 only for
shipping those films that are i n one of the last
three stages of decomposition.
UN 2555
*
Package waste nitrocellulose-based
films with not less than 25-percent water
and label as a flammable solid:
PackagingSpecifications
Steel drum1A1, 1A2
Plastic drum1H1, 1H2
Waste nitrocellulose-based films
must be transported by a carrier that is
authorized by USDOT and USEPA to
transport hazardous waste. A hazardous
waste manifest and a Land Disposal
Restriction Form must accompany the
material during transport.
DESTRUCTION
Once your cellulose nitrate film is
determined to be a hazardous waste, you
need to ship it to a treatment facility as
soon as possible, following the
transportation requirements outlined
above.
The appropriate treatment technology
for cellulose nitrate film is incineration.
The incinerating facility is required to
have an RCRA permit to treat all EPA
Hazardous Waste Numbers associated
with your waste. This includes D001,
D003, and possibly D011, depending on
the decomposition stage of the film.
There are many facilities in the
United States that are permitted to
manage these types of waste. The
following companies provide transportation and waste treatment. This list
is provided for your convenience and
does not constitute a recommendation or
endorsement by Kodak:
ENSCO, Inc.
Lincolnshire, IL
Corporate Sales Offices
(708) 945-5700
Ross Incineration
Grafton, OH
(800) 878-ROSS
WTS, Inc.
640 Park Place
Niagara Falls, NY
(716) 282-4100
Safe Handling, Storage, and Destruction of Nitrate-Based Motion Picture Films• H-182 (ENG) 6
Page 7
REFFERENCES
1. ISO/DIS 10356:
Cinematography—Storage and
Handling of Cellulose Nitrate Base
film.
2. ANSI/NFPA 40 (1994 edition)
Standard for the Storage and
Handling of Cellulose Nitrate
Motion Picture Film.
3. Hill, J.R., and Weber, C.G.,
“Stability of Motion Picture Films
as Determined by Accelerated
Aging,” Journal SMPTE, vol. 27,
677-689 (1936).
4. Carroll, J.F., and Calhoun, J.M.,
“Effect of Nitrogen Oxide Gases on
Processed Acetate Film,” Journal
SMPTE, vol. 64, 501-507 (1955).
5. Daily, J., “The Care and Handling
of Hazardous Nitrate Film at
UCLA’s Unique Projection
Facilities,” Journal SMPTE
453-456, (1990).
6. Edge, M., Allen, N.S., Hayes, M.,
and Riley, P.N.K., “Mechanism of
Deterioration in Cellulose Nitrate
Base Archival Cinematographic
Film,” European Polymer Journal,
(1990).
7. KODAK Publication No. H-23
(1992): The Book of Film Care,
Chapter 3, “Storage and Handling
of Processed Nitrate Film,” pages
30-35.
8. Louvet, Alain, Ph.D., Dissertation,
“The Study on the Decomposition
of Cellulose Nitrate Photographic
Negatives,” December, 1994, de
l’Université et Marie Curie, Paris,
France.
9. Ram, A. Tulsi, Kopperl, D.F.,
Sehlin, R.C., Masaryk-Morris, S.,
Vincent, J.L., and Miller, P., “The
Effects and Prevention of the
‘Vinegar Syndrome,’” Journal of
Imaging Science and Technology,
vol. 38, 249-261, May/June 1994.
10. Ram, A. Tulsi, Carroll-Yacoby,
D.M., Miller, P., and Heuer, H.D.,
“The Status Report on the
Worldwide Molecular Sieve Trade
Test Results,” Paper presented at
the AMIA meeting, Boston, MA,
1994, and at the FIAF meeting in
London, U.K., January 1995. Under
publication in FIFA Journal.
11. Adelstein, P.Z., Reilly, J.M.,
Nishimura, D.W., and Erbland,
C.J., “Stability of Cellulose Ester
Base Photographic Film: Part IV—
Behavior of Nitrate Base Film,”
Journal SMPTE 359-369, (1995).
Safe Handling, Storage, and Destruction of Nitrate-Based Motion Picture Films• H-182 (ENG)
7
Page 8
MORE INFORMATION
For more information about
Kodak Environmental
Services, visit Kodak online at
For environmental or safety
questions about Kodak
products, services, or
publications, call
For questions about the safe
handling of photographic
chemicals or health-related
information about Kodak
products, call our 24-hour
hotline at
For questions concerning the
safe transportation of Kodak
products, call Kodak
Transportation Services at
If you have questions about Kodak products, call Kodak.
In the U.S.A., call 1-800-242-2424,
contact your local Kodak
representative, or your
usual supplier of Kodak
products.
J-110 Formaldehyde Use in Photographic
Processing Facilities
J-111 Determining Workplace Exposure to
Formaldehyde
J-112 Formaldehyde Emergencies
J-113 About the OSHA Formaldehyde Standard
J-311 Hazard Communication for Photographic
Processing Facilities
J-312 Personal Protective Equipment
Requirements in Photographic Processing
Facilities
J-314
Indoor Air Quality and Ventilation in
Photographic Processing Facilities
J-315
Special Materials Management in Photographic Processing Facilities
J-316 Emergency Preparedness for Photographic
Processing Facilities
J-317 Injury and Illness Management for
Photographic Processing Facilities
This publication is a guide to the Federal Health and
Safety Regulations that apply to a typical photographic
processing facility. Local or state requirements may a lso
apply. Verify the specific requirements for your faci lity
with your legal counsel.
This publication is printed on recycled paper that contains
50 percent recycled fiber and 10 percent post-consumer material.
EASTMAN KODAK COMPANY • ROCHESTER, NY 14650
Safe Handling, Storage, and Destruction of
Nitrate-Based Motion Picture Films
KODAK Publication No.
CAT No. 801 2049
H-182 (ENG)
Kodak and "e" mark are trademarks
Minor Revision 1/04
Printed in U.S.A.
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