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(757) 484-2308
vomiting after ingestion. However, if the substance/mixture also presents an aspiration toxicity hazard, the
recommendation to induce vomiting may need to be modified.
A.10.1.5 S
PECIFIC
C
ONSIDERATIONS
A.10.1.5.1 The classification criteria refer to kinematic viscosity. The following provides the conversion
between dynamic and kinematic viscosity:
A.10.1.5.2 Although the definition of aspiration in A.10.1.1 includes the entry of solids into the respiratory
system, classification according to (b) in table A.10.1 for Category 1 is intended to apply to liquid substances and
mixtures only.
A.10.1.5.3 Classification of aerosol/mist products.
Aerosol and mist products are usually dispensed in containers such as self-pressurized containers, trigger and
pump sprayers. Classification for these products shall be considered if their use may form a pool of product in the
mouth, which then may be aspirated. If the mist or aerosol from a pressurized container is fine, a pool may not be
formed. On the other hand, if a pressurized container dispenses product in a stream, a pool may be formed that may
then be aspirated. Usually, the mist produced by trigger and pump sprayers is coarse and therefore, a pool may be
formed that then may be aspirated. When the pump mechanism may be removed and contents are available to be
swallowed then the classification of the products should be considered.
A.10.2 C
LASSIFICATION
C
RITERIA FOR
S
UBSTANCES
T
ABLE
A.10.1—C
RITERIA FOR
A
SPIRATION
T
OXICITY
Category
Criteria
Category 1: Chemicals known to cause human
aspiration toxicity hazards or to be regarded as if they
cause human aspiration toxicity hazard
A substance shall be classified in Category
1:
(a) If reliable and good quality human
evidence indicates that it causes aspiration
toxicity (See note); or
(b) If it is a hydrocarbon and has a
kinematic viscosity ≤20.5 mm
2
/s,
measured at 40 °C.
Note:
Examples of substances included in Category 1 are certain hydrocarbons, turpentine and pine oil.
A.10.3 C
LASSIFICATION
C
RITERIA FOR
M
IXTURES
A.10.3.1 C
LASSIFICATION
W
HEN
D
ATA
A
RE
A
VAILABLE FOR THE
C
OMPLETE
M
IXTURE
A mixture shall be classified in Category 1 based on reliable and good quality human evidence.
A.10.3.2 C
LASSIFICATION OF
M
IXTURES
W
HEN
D
ATA
A
RE
N
OT
A
VAILABLE FOR THE
C
OMPLETE
M
IXTURE
:
B
RIDGING
P
RINCIPLES
A.10.3.2.1 Where the mixture itself has not been tested to determine its aspiration toxicity, but there are
sufficient data on both the individual ingredients and similar tested mixtures to adequately characterize the hazard of