722JAVEL WATER
philes. Useful in study of tumor growth inhibition types with somewhat different compositions and
properties have been used.
and other biochemical research.
Jetset. A fast-setting cement developed by the
Javel water. NaHClO.
Portland Cement Association. Reported to harden in
Use: A bleach.
20 minutes after pouring. Accelerating agent has not
been disclosed.
“Jayflex” [Exxon Chemical International].
TM for a plasticizer.
JH. (methyl-cis-10,11-epoxy-7-ethyl-3,11-di-
methyl-trans,trans-2,6-tridecadienoate). A syn-
“Jeffamine” [Texaco]. TM for polyoxypropy-
thetic hormone containing a 13-carbon chain; said to
leneamines.
have possibilities as an insecticide. It acts by pre-
Grade: 3 diamine, 1 triamine.
venting insects from maturing. Its future depends on
Available forms: Liquid.
the possibility of large-scale production.
Hazard: Corrosive.
See juvenile hormone.
Use: Curing agent for epoxy resin systems in adhe-
sives, elastomers, and foam formulations, and as an
“JHR Compound” [Barium]. TM for a ther-
intermediate for textile and paper-treating chem-
moplastic compound impervious to mineral acid;
icals.
does not decompose hydrogen peroxide.
Use: To coat interiors of tanks and containers for
jelly. A modified form of the word gel widely used
shipment of hydrogen peroxide, acids, etc.
in popular language but also used in chemical litera-
ture to refer to the mechanical strength of the gel
“Jiffix” [Mallinckrodt]. TM for an acid-hard-
structures occurring with pectins, gelatin, and vari-
ening, ammonium thiosulfate fixing bath. Ready-
ous natural gums. “Jelly strength” is frequently
mixed and rapid-acting.
specified in the food industry. Other uses of the word
are found in “petroleum jelly” obtained as a distilla-
“JinBest Paste” [Jinicolor]. TM for a semi
tion product of petroleum residues (petrolatum) and
discharge paste.
in the so-called royal jelly, a natural nutrient mixture
of proteins and carbohydrates produced by bees as
“JIN Print” [Jinicolor]. TM for a synthetic
food for the queen bee.
thickener for pigment printing.
See gel.
Joint European Torus. See JET.
“Jel-O-Mer” [Reichhold]. TM for a thixo-
tropic additive used in coatings.
jojoba oil.
Properties: Colorless, odorless, waxy liquid; chemi-
Jenner, Edward. (1749–1823). An English
cally similar to sperm oil.
physician, Jenner studied medicine in London and
Derivation: By crushing seeds of an evergreen desert
established his practice in the rural area of Glouces-
shrub found in southwestern U.S. and northern Mex-
tershire. Here he discovered the technique of vacci-
ico. Experimental cultivation in California and Isra-
nation as a preventive of smallpox (1776). The idea
el. Yield of oil from seeds approaches 50%.
of utilizing cowpox, a disease of cattle, as a protec-
Use: Substitute for sperm oil, especially in transmis-
tive medium was suggested by his observation that
sion lubricants, high-pressure lubricant, antifoam
personnel working in dairies developed immunity to
agent (antibiotic fermentation), substitute for car-
smallpox after contracting the much milder cowpox.
nauba wax and beeswax, cosmetic preparations.
Jenner’s work not only led to almost complete elimi-
nation of smallpox in Europe, but also anticipated
Joliot-Curie, Frederick. (1900–1958). A
the development of immune reactions by Pasteur a
French physicist who, along with his wife Irene
century later. His success was no accident, but rather
Joliot-Curie, won the Nobel Prize in chemistry in
the result of detailed observations from which he
1935. His important discoveries included artificial
drew correct conclusions. He was a scientist of the
radioactivity. He did much work on atom structure,
highest caliber and a noteworthy benefactor of man-
dematerialization of electrons, and inverse transfor-
kind.
mation. Work on hormone synthesis and thyroid
substances containing radioactively labeled ele-
JET. Abbreviation for Joint European Torus, an
ments was significant. ScD from the University of
experimental nuclear fusion device in England. It is
Paris was followed by a distinguished career filled
a project jointly undertaken by several European
with honors and appointments.
countries.
See tokamak; fusion.
Joliot-Curie, Irene. (1897–1956). A French
nuclear scientist who won the Nobel Prize for chem-
jet fuel. A fuel for jet (turbine) engines, usually a istry with her husband Frederic Joliet-Curie. Their
petroleum distillate similar to kerosine. A number of joint work involved production of artificial radioac-